WordPress/WordPress

View on GitHub
wp-includes/class-wp-query.php

Summary

Maintainability
F
1 mo
Test Coverage
<?php
/**
 * Query API: WP_Query class
 *
 * @package WordPress
 * @subpackage Query
 * @since 4.7.0
 */

/**
 * The WordPress Query class.
 *
 * @link https://developer.wordpress.org/reference/classes/wp_query/
 *
 * @since 1.5.0
 * @since 4.5.0 Removed the `$comments_popup` property.
 */
#[AllowDynamicProperties]
class WP_Query {

    /**
     * Query vars set by the user.
     *
     * @since 1.5.0
     * @var array
     */
    public $query;

    /**
     * Query vars, after parsing.
     *
     * @since 1.5.0
     * @var array
     */
    public $query_vars = array();

    /**
     * Taxonomy query, as passed to get_tax_sql().
     *
     * @since 3.1.0
     * @var WP_Tax_Query|null A taxonomy query instance.
     */
    public $tax_query;

    /**
     * Metadata query container.
     *
     * @since 3.2.0
     * @var WP_Meta_Query A meta query instance.
     */
    public $meta_query = false;

    /**
     * Date query container.
     *
     * @since 3.7.0
     * @var WP_Date_Query A date query instance.
     */
    public $date_query = false;

    /**
     * Holds the data for a single object that is queried.
     *
     * Holds the contents of a post, page, category, attachment.
     *
     * @since 1.5.0
     * @var WP_Term|WP_Post_Type|WP_Post|WP_User|null
     */
    public $queried_object;

    /**
     * The ID of the queried object.
     *
     * @since 1.5.0
     * @var int
     */
    public $queried_object_id;

    /**
     * SQL for the database query.
     *
     * @since 2.0.1
     * @var string
     */
    public $request;

    /**
     * Array of post objects or post IDs.
     *
     * @since 1.5.0
     * @var WP_Post[]|int[]
     */
    public $posts;

    /**
     * The number of posts for the current query.
     *
     * @since 1.5.0
     * @var int
     */
    public $post_count = 0;

    /**
     * Index of the current item in the loop.
     *
     * @since 1.5.0
     * @var int
     */
    public $current_post = -1;

    /**
     * Whether the caller is before the loop.
     *
     * @since 6.3.0
     * @var bool
     */
    public $before_loop = true;

    /**
     * Whether the loop has started and the caller is in the loop.
     *
     * @since 2.0.0
     * @var bool
     */
    public $in_the_loop = false;

    /**
     * The current post.
     *
     * This property does not get populated when the `fields` argument is set to
     * `ids` or `id=>parent`.
     *
     * @since 1.5.0
     * @var WP_Post|null
     */
    public $post;

    /**
     * The list of comments for current post.
     *
     * @since 2.2.0
     * @var WP_Comment[]
     */
    public $comments;

    /**
     * The number of comments for the posts.
     *
     * @since 2.2.0
     * @var int
     */
    public $comment_count = 0;

    /**
     * The index of the comment in the comment loop.
     *
     * @since 2.2.0
     * @var int
     */
    public $current_comment = -1;

    /**
     * Current comment object.
     *
     * @since 2.2.0
     * @var WP_Comment
     */
    public $comment;

    /**
     * The number of found posts for the current query.
     *
     * If limit clause was not used, equals $post_count.
     *
     * @since 2.1.0
     * @var int
     */
    public $found_posts = 0;

    /**
     * The number of pages.
     *
     * @since 2.1.0
     * @var int
     */
    public $max_num_pages = 0;

    /**
     * The number of comment pages.
     *
     * @since 2.7.0
     * @var int
     */
    public $max_num_comment_pages = 0;

    /**
     * Signifies whether the current query is for a single post.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_single = false;

    /**
     * Signifies whether the current query is for a preview.
     *
     * @since 2.0.0
     * @var bool
     */
    public $is_preview = false;

    /**
     * Signifies whether the current query is for a page.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_page = false;

    /**
     * Signifies whether the current query is for an archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_archive = false;

    /**
     * Signifies whether the current query is for a date archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_date = false;

    /**
     * Signifies whether the current query is for a year archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_year = false;

    /**
     * Signifies whether the current query is for a month archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_month = false;

    /**
     * Signifies whether the current query is for a day archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_day = false;

    /**
     * Signifies whether the current query is for a specific time.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_time = false;

    /**
     * Signifies whether the current query is for an author archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_author = false;

    /**
     * Signifies whether the current query is for a category archive.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_category = false;

    /**
     * Signifies whether the current query is for a tag archive.
     *
     * @since 2.3.0
     * @var bool
     */
    public $is_tag = false;

    /**
     * Signifies whether the current query is for a taxonomy archive.
     *
     * @since 2.5.0
     * @var bool
     */
    public $is_tax = false;

    /**
     * Signifies whether the current query is for a search.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_search = false;

    /**
     * Signifies whether the current query is for a feed.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_feed = false;

    /**
     * Signifies whether the current query is for a comment feed.
     *
     * @since 2.2.0
     * @var bool
     */
    public $is_comment_feed = false;

    /**
     * Signifies whether the current query is for trackback endpoint call.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_trackback = false;

    /**
     * Signifies whether the current query is for the site homepage.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_home = false;

    /**
     * Signifies whether the current query is for the Privacy Policy page.
     *
     * @since 5.2.0
     * @var bool
     */
    public $is_privacy_policy = false;

    /**
     * Signifies whether the current query couldn't find anything.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_404 = false;

    /**
     * Signifies whether the current query is for an embed.
     *
     * @since 4.4.0
     * @var bool
     */
    public $is_embed = false;

    /**
     * Signifies whether the current query is for a paged result and not for the first page.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_paged = false;

    /**
     * Signifies whether the current query is for an administrative interface page.
     *
     * @since 1.5.0
     * @var bool
     */
    public $is_admin = false;

    /**
     * Signifies whether the current query is for an attachment page.
     *
     * @since 2.0.0
     * @var bool
     */
    public $is_attachment = false;

    /**
     * Signifies whether the current query is for an existing single post of any post type
     * (post, attachment, page, custom post types).
     *
     * @since 2.1.0
     * @var bool
     */
    public $is_singular = false;

    /**
     * Signifies whether the current query is for the robots.txt file.
     *
     * @since 2.1.0
     * @var bool
     */
    public $is_robots = false;

    /**
     * Signifies whether the current query is for the favicon.ico file.
     *
     * @since 5.4.0
     * @var bool
     */
    public $is_favicon = false;

    /**
     * Signifies whether the current query is for the page_for_posts page.
     *
     * Basically, the homepage if the option isn't set for the static homepage.
     *
     * @since 2.1.0
     * @var bool
     */
    public $is_posts_page = false;

    /**
     * Signifies whether the current query is for a post type archive.
     *
     * @since 3.1.0
     * @var bool
     */
    public $is_post_type_archive = false;

    /**
     * Stores the ->query_vars state like md5(serialize( $this->query_vars ) ) so we know
     * whether we have to re-parse because something has changed
     *
     * @since 3.1.0
     * @var bool|string
     */
    private $query_vars_hash = false;

    /**
     * Whether query vars have changed since the initial parse_query() call. Used to catch modifications to query vars made
     * via pre_get_posts hooks.
     *
     * @since 3.1.1
     */
    private $query_vars_changed = true;

    /**
     * Set if post thumbnails are cached
     *
     * @since 3.2.0
     * @var bool
     */
    public $thumbnails_cached = false;

    /**
     * Controls whether an attachment query should include filenames or not.
     *
     * @since 6.0.3
     * @var bool
     */
    protected $allow_query_attachment_by_filename = false;

    /**
     * Cached list of search stopwords.
     *
     * @since 3.7.0
     * @var array
     */
    private $stopwords;

    private $compat_fields = array( 'query_vars_hash', 'query_vars_changed' );

    private $compat_methods = array( 'init_query_flags', 'parse_tax_query' );

    /**
     * Resets query flags to false.
     *
     * The query flags are what page info WordPress was able to figure out.
     *
     * @since 2.0.0
     */
    private function init_query_flags() {
        $this->is_single            = false;
        $this->is_preview           = false;
        $this->is_page              = false;
        $this->is_archive           = false;
        $this->is_date              = false;
        $this->is_year              = false;
        $this->is_month             = false;
        $this->is_day               = false;
        $this->is_time              = false;
        $this->is_author            = false;
        $this->is_category          = false;
        $this->is_tag               = false;
        $this->is_tax               = false;
        $this->is_search            = false;
        $this->is_feed              = false;
        $this->is_comment_feed      = false;
        $this->is_trackback         = false;
        $this->is_home              = false;
        $this->is_privacy_policy    = false;
        $this->is_404               = false;
        $this->is_paged             = false;
        $this->is_admin             = false;
        $this->is_attachment        = false;
        $this->is_singular          = false;
        $this->is_robots            = false;
        $this->is_favicon           = false;
        $this->is_posts_page        = false;
        $this->is_post_type_archive = false;
    }

    /**
     * Initiates object properties and sets default values.
     *
     * @since 1.5.0
     */
    public function init() {
        unset( $this->posts );
        unset( $this->query );
        $this->query_vars = array();
        unset( $this->queried_object );
        unset( $this->queried_object_id );
        $this->post_count   = 0;
        $this->current_post = -1;
        $this->in_the_loop  = false;
        $this->before_loop  = true;
        unset( $this->request );
        unset( $this->post );
        unset( $this->comments );
        unset( $this->comment );
        $this->comment_count         = 0;
        $this->current_comment       = -1;
        $this->found_posts           = 0;
        $this->max_num_pages         = 0;
        $this->max_num_comment_pages = 0;

        $this->init_query_flags();
    }

    /**
     * Reparses the query vars.
     *
     * @since 1.5.0
     */
    public function parse_query_vars() {
        $this->parse_query();
    }

    /**
     * Fills in the query variables, which do not exist within the parameter.
     *
     * @since 2.1.0
     * @since 4.5.0 Removed the `comments_popup` public query variable.
     *
     * @param array $query_vars Defined query variables.
     * @return array Complete query variables with undefined ones filled in empty.
     */
    public function fill_query_vars( $query_vars ) {
        $keys = array(
            'error',
            'm',
            'p',
            'post_parent',
            'subpost',
            'subpost_id',
            'attachment',
            'attachment_id',
            'name',
            'pagename',
            'page_id',
            'second',
            'minute',
            'hour',
            'day',
            'monthnum',
            'year',
            'w',
            'category_name',
            'tag',
            'cat',
            'tag_id',
            'author',
            'author_name',
            'feed',
            'tb',
            'paged',
            'meta_key',
            'meta_value',
            'preview',
            's',
            'sentence',
            'title',
            'fields',
            'menu_order',
            'embed',
        );

        foreach ( $keys as $key ) {
            if ( ! isset( $query_vars[ $key ] ) ) {
                $query_vars[ $key ] = '';
            }
        }

        $array_keys = array(
            'category__in',
            'category__not_in',
            'category__and',
            'post__in',
            'post__not_in',
            'post_name__in',
            'tag__in',
            'tag__not_in',
            'tag__and',
            'tag_slug__in',
            'tag_slug__and',
            'post_parent__in',
            'post_parent__not_in',
            'author__in',
            'author__not_in',
            'search_columns',
        );

        foreach ( $array_keys as $key ) {
            if ( ! isset( $query_vars[ $key ] ) ) {
                $query_vars[ $key ] = array();
            }
        }

        return $query_vars;
    }

    /**
     * Parses a query string and sets query type booleans.
     *
     * @since 1.5.0
     * @since 4.2.0 Introduced the ability to order by specific clauses of a `$meta_query`, by passing the clause's
     *              array key to `$orderby`.
     * @since 4.4.0 Introduced `$post_name__in` and `$title` parameters. `$s` was updated to support excluded
     *              search terms, by prepending a hyphen.
     * @since 4.5.0 Removed the `$comments_popup` parameter.
     *              Introduced the `$comment_status` and `$ping_status` parameters.
     *              Introduced `RAND(x)` syntax for `$orderby`, which allows an integer seed value to random sorts.
     * @since 4.6.0 Added 'post_name__in' support for `$orderby`. Introduced the `$lazy_load_term_meta` argument.
     * @since 4.9.0 Introduced the `$comment_count` parameter.
     * @since 5.1.0 Introduced the `$meta_compare_key` parameter.
     * @since 5.3.0 Introduced the `$meta_type_key` parameter.
     * @since 6.1.0 Introduced the `$update_menu_item_cache` parameter.
     * @since 6.2.0 Introduced the `$search_columns` parameter.
     *
     * @param string|array $query {
     *     Optional. Array or string of Query parameters.
     *
     *     @type int             $attachment_id          Attachment post ID. Used for 'attachment' post_type.
     *     @type int|string      $author                 Author ID, or comma-separated list of IDs.
     *     @type string          $author_name            User 'user_nicename'.
     *     @type int[]           $author__in             An array of author IDs to query from.
     *     @type int[]           $author__not_in         An array of author IDs not to query from.
     *     @type bool            $cache_results          Whether to cache post information. Default true.
     *     @type int|string      $cat                    Category ID or comma-separated list of IDs (this or any children).
     *     @type int[]           $category__and          An array of category IDs (AND in).
     *     @type int[]           $category__in           An array of category IDs (OR in, no children).
     *     @type int[]           $category__not_in       An array of category IDs (NOT in).
     *     @type string          $category_name          Use category slug (not name, this or any children).
     *     @type array|int       $comment_count          Filter results by comment count. Provide an integer to match
     *                                                   comment count exactly. Provide an array with integer 'value'
     *                                                   and 'compare' operator ('=', '!=', '>', '>=', '<', '<=' ) to
     *                                                   compare against comment_count in a specific way.
     *     @type string          $comment_status         Comment status.
     *     @type int             $comments_per_page      The number of comments to return per page.
     *                                                   Default 'comments_per_page' option.
     *     @type array           $date_query             An associative array of WP_Date_Query arguments.
     *                                                   See WP_Date_Query::__construct().
     *     @type int             $day                    Day of the month. Default empty. Accepts numbers 1-31.
     *     @type bool            $exact                  Whether to search by exact keyword. Default false.
     *     @type string          $fields                 Post fields to query for. Accepts:
     *                                                   - '' Returns an array of complete post objects (`WP_Post[]`).
     *                                                   - 'ids' Returns an array of post IDs (`int[]`).
     *                                                   - 'id=>parent' Returns an associative array of parent post IDs,
     *                                                     keyed by post ID (`int[]`).
     *                                                   Default ''.
     *     @type int             $hour                   Hour of the day. Default empty. Accepts numbers 0-23.
     *     @type int|bool        $ignore_sticky_posts    Whether to ignore sticky posts or not. Setting this to false
     *                                                   excludes stickies from 'post__in'. Accepts 1|true, 0|false.
     *                                                   Default false.
     *     @type int             $m                      Combination YearMonth. Accepts any four-digit year and month
     *                                                   numbers 01-12. Default empty.
     *     @type string|string[] $meta_key               Meta key or keys to filter by.
     *     @type string|string[] $meta_value             Meta value or values to filter by.
     *     @type string          $meta_compare           MySQL operator used for comparing the meta value.
     *                                                   See WP_Meta_Query::__construct() for accepted values and default value.
     *     @type string          $meta_compare_key       MySQL operator used for comparing the meta key.
     *                                                   See WP_Meta_Query::__construct() for accepted values and default value.
     *     @type string          $meta_type              MySQL data type that the meta_value column will be CAST to for comparisons.
     *                                                   See WP_Meta_Query::__construct() for accepted values and default value.
     *     @type string          $meta_type_key          MySQL data type that the meta_key column will be CAST to for comparisons.
     *                                                   See WP_Meta_Query::__construct() for accepted values and default value.
     *     @type array           $meta_query             An associative array of WP_Meta_Query arguments.
     *                                                   See WP_Meta_Query::__construct() for accepted values.
     *     @type int             $menu_order             The menu order of the posts.
     *     @type int             $minute                 Minute of the hour. Default empty. Accepts numbers 0-59.
     *     @type int             $monthnum               The two-digit month. Default empty. Accepts numbers 1-12.
     *     @type string          $name                   Post slug.
     *     @type bool            $nopaging               Show all posts (true) or paginate (false). Default false.
     *     @type bool            $no_found_rows          Whether to skip counting the total rows found. Enabling can improve
     *                                                   performance. Default false.
     *     @type int             $offset                 The number of posts to offset before retrieval.
     *     @type string          $order                  Designates ascending or descending order of posts. Default 'DESC'.
     *                                                   Accepts 'ASC', 'DESC'.
     *     @type string|array    $orderby                Sort retrieved posts by parameter. One or more options may be passed.
     *                                                   To use 'meta_value', or 'meta_value_num', 'meta_key=keyname' must be
     *                                                   also be defined. To sort by a specific `$meta_query` clause, use that
     *                                                   clause's array key. Accepts:
     *                                                   - 'none'
     *                                                   - 'name'
     *                                                   - 'author'
     *                                                   - 'date'
     *                                                   - 'title'
     *                                                   - 'modified'
     *                                                   - 'menu_order'
     *                                                   - 'parent'
     *                                                   - 'ID'
     *                                                   - 'rand'
     *                                                   - 'relevance'
     *                                                   - 'RAND(x)' (where 'x' is an integer seed value)
     *                                                   - 'comment_count'
     *                                                   - 'meta_value'
     *                                                   - 'meta_value_num'
     *                                                   - 'post__in'
     *                                                   - 'post_name__in'
     *                                                   - 'post_parent__in'
     *                                                   - The array keys of `$meta_query`.
     *                                                   Default is 'date', except when a search is being performed, when
     *                                                   the default is 'relevance'.
     *     @type int             $p                      Post ID.
     *     @type int             $page                   Show the number of posts that would show up on page X of a
     *                                                   static front page.
     *     @type int             $paged                  The number of the current page.
     *     @type int             $page_id                Page ID.
     *     @type string          $pagename               Page slug.
     *     @type string          $perm                   Show posts if user has the appropriate capability.
     *     @type string          $ping_status            Ping status.
     *     @type int[]           $post__in               An array of post IDs to retrieve, sticky posts will be included.
     *     @type int[]           $post__not_in           An array of post IDs not to retrieve. Note: a string of comma-
     *                                                   separated IDs will NOT work.
     *     @type string          $post_mime_type         The mime type of the post. Used for 'attachment' post_type.
     *     @type string[]        $post_name__in          An array of post slugs that results must match.
     *     @type int             $post_parent            Page ID to retrieve child pages for. Use 0 to only retrieve
     *                                                   top-level pages.
     *     @type int[]           $post_parent__in        An array containing parent page IDs to query child pages from.
     *     @type int[]           $post_parent__not_in    An array containing parent page IDs not to query child pages from.
     *     @type string|string[] $post_type              A post type slug (string) or array of post type slugs.
     *                                                   Default 'any' if using 'tax_query'.
     *     @type string|string[] $post_status            A post status (string) or array of post statuses.
     *     @type int             $posts_per_page         The number of posts to query for. Use -1 to request all posts.
     *     @type int             $posts_per_archive_page The number of posts to query for by archive page. Overrides
     *                                                   'posts_per_page' when is_archive(), or is_search() are true.
     *     @type string          $s                      Search keyword(s). Prepending a term with a hyphen will
     *                                                   exclude posts matching that term. Eg, 'pillow -sofa' will
     *                                                   return posts containing 'pillow' but not 'sofa'. The
     *                                                   character used for exclusion can be modified using the
     *                                                   the 'wp_query_search_exclusion_prefix' filter.
     *     @type string[]        $search_columns         Array of column names to be searched. Accepts 'post_title',
     *                                                   'post_excerpt' and 'post_content'. Default empty array.
     *     @type int             $second                 Second of the minute. Default empty. Accepts numbers 0-59.
     *     @type bool            $sentence               Whether to search by phrase. Default false.
     *     @type bool            $suppress_filters       Whether to suppress filters. Default false.
     *     @type string          $tag                    Tag slug. Comma-separated (either), Plus-separated (all).
     *     @type int[]           $tag__and               An array of tag IDs (AND in).
     *     @type int[]           $tag__in                An array of tag IDs (OR in).
     *     @type int[]           $tag__not_in            An array of tag IDs (NOT in).
     *     @type int             $tag_id                 Tag id or comma-separated list of IDs.
     *     @type string[]        $tag_slug__and          An array of tag slugs (AND in).
     *     @type string[]        $tag_slug__in           An array of tag slugs (OR in). unless 'ignore_sticky_posts' is
     *                                                   true. Note: a string of comma-separated IDs will NOT work.
     *     @type array           $tax_query              An associative array of WP_Tax_Query arguments.
     *                                                   See WP_Tax_Query::__construct().
     *     @type string          $title                  Post title.
     *     @type bool            $update_post_meta_cache Whether to update the post meta cache. Default true.
     *     @type bool            $update_post_term_cache Whether to update the post term cache. Default true.
     *     @type bool            $update_menu_item_cache Whether to update the menu item cache. Default false.
     *     @type bool            $lazy_load_term_meta    Whether to lazy-load term meta. Setting to false will
     *                                                   disable cache priming for term meta, so that each
     *                                                   get_term_meta() call will hit the database.
     *                                                   Defaults to the value of `$update_post_term_cache`.
     *     @type int             $w                      The week number of the year. Default empty. Accepts numbers 0-53.
     *     @type int             $year                   The four-digit year. Default empty. Accepts any four-digit year.
     * }
     */
    public function parse_query( $query = '' ) {
        if ( ! empty( $query ) ) {
            $this->init();
            $this->query      = wp_parse_args( $query );
            $this->query_vars = $this->query;
        } elseif ( ! isset( $this->query ) ) {
            $this->query = $this->query_vars;
        }

        $this->query_vars         = $this->fill_query_vars( $this->query_vars );
        $qv                       = &$this->query_vars;
        $this->query_vars_changed = true;

        if ( ! empty( $qv['robots'] ) ) {
            $this->is_robots = true;
        } elseif ( ! empty( $qv['favicon'] ) ) {
            $this->is_favicon = true;
        }

        if ( ! is_scalar( $qv['p'] ) || (int) $qv['p'] < 0 ) {
            $qv['p']     = 0;
            $qv['error'] = '404';
        } else {
            $qv['p'] = (int) $qv['p'];
        }

        $qv['page_id']  = is_scalar( $qv['page_id'] ) ? absint( $qv['page_id'] ) : 0;
        $qv['year']     = is_scalar( $qv['year'] ) ? absint( $qv['year'] ) : 0;
        $qv['monthnum'] = is_scalar( $qv['monthnum'] ) ? absint( $qv['monthnum'] ) : 0;
        $qv['day']      = is_scalar( $qv['day'] ) ? absint( $qv['day'] ) : 0;
        $qv['w']        = is_scalar( $qv['w'] ) ? absint( $qv['w'] ) : 0;
        $qv['m']        = is_scalar( $qv['m'] ) ? preg_replace( '|[^0-9]|', '', $qv['m'] ) : '';
        $qv['paged']    = is_scalar( $qv['paged'] ) ? absint( $qv['paged'] ) : 0;
        $qv['cat']      = preg_replace( '|[^0-9,-]|', '', $qv['cat'] ); // Array or comma-separated list of positive or negative integers.
        $qv['author']   = is_scalar( $qv['author'] ) ? preg_replace( '|[^0-9,-]|', '', $qv['author'] ) : ''; // Comma-separated list of positive or negative integers.
        $qv['pagename'] = is_scalar( $qv['pagename'] ) ? trim( $qv['pagename'] ) : '';
        $qv['name']     = is_scalar( $qv['name'] ) ? trim( $qv['name'] ) : '';
        $qv['title']    = is_scalar( $qv['title'] ) ? trim( $qv['title'] ) : '';

        if ( is_scalar( $qv['hour'] ) && '' !== $qv['hour'] ) {
            $qv['hour'] = absint( $qv['hour'] );
        } else {
            $qv['hour'] = '';
        }

        if ( is_scalar( $qv['minute'] ) && '' !== $qv['minute'] ) {
            $qv['minute'] = absint( $qv['minute'] );
        } else {
            $qv['minute'] = '';
        }

        if ( is_scalar( $qv['second'] ) && '' !== $qv['second'] ) {
            $qv['second'] = absint( $qv['second'] );
        } else {
            $qv['second'] = '';
        }

        if ( is_scalar( $qv['menu_order'] ) && '' !== $qv['menu_order'] ) {
            $qv['menu_order'] = absint( $qv['menu_order'] );
        } else {
            $qv['menu_order'] = '';
        }

        // Fairly large, potentially too large, upper bound for search string lengths.
        if ( ! is_scalar( $qv['s'] ) || ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 ) ) {
            $qv['s'] = '';
        }

        // Compat. Map subpost to attachment.
        if ( is_scalar( $qv['subpost'] ) && '' != $qv['subpost'] ) {
            $qv['attachment'] = $qv['subpost'];
        }
        if ( is_scalar( $qv['subpost_id'] ) && '' != $qv['subpost_id'] ) {
            $qv['attachment_id'] = $qv['subpost_id'];
        }

        $qv['attachment_id'] = is_scalar( $qv['attachment_id'] ) ? absint( $qv['attachment_id'] ) : 0;

        if ( ( '' !== $qv['attachment'] ) || ! empty( $qv['attachment_id'] ) ) {
            $this->is_single     = true;
            $this->is_attachment = true;
        } elseif ( '' !== $qv['name'] ) {
            $this->is_single = true;
        } elseif ( $qv['p'] ) {
            $this->is_single = true;
        } elseif ( '' !== $qv['pagename'] || ! empty( $qv['page_id'] ) ) {
            $this->is_page   = true;
            $this->is_single = false;
        } else {
            // Look for archive queries. Dates, categories, authors, search, post type archives.

            if ( isset( $this->query['s'] ) ) {
                $this->is_search = true;
            }

            if ( '' !== $qv['second'] ) {
                $this->is_time = true;
                $this->is_date = true;
            }

            if ( '' !== $qv['minute'] ) {
                $this->is_time = true;
                $this->is_date = true;
            }

            if ( '' !== $qv['hour'] ) {
                $this->is_time = true;
                $this->is_date = true;
            }

            if ( $qv['day'] ) {
                if ( ! $this->is_date ) {
                    $date = sprintf( '%04d-%02d-%02d', $qv['year'], $qv['monthnum'], $qv['day'] );
                    if ( $qv['monthnum'] && $qv['year'] && ! wp_checkdate( $qv['monthnum'], $qv['day'], $qv['year'], $date ) ) {
                        $qv['error'] = '404';
                    } else {
                        $this->is_day  = true;
                        $this->is_date = true;
                    }
                }
            }

            if ( $qv['monthnum'] ) {
                if ( ! $this->is_date ) {
                    if ( 12 < $qv['monthnum'] ) {
                        $qv['error'] = '404';
                    } else {
                        $this->is_month = true;
                        $this->is_date  = true;
                    }
                }
            }

            if ( $qv['year'] ) {
                if ( ! $this->is_date ) {
                    $this->is_year = true;
                    $this->is_date = true;
                }
            }

            if ( $qv['m'] ) {
                $this->is_date = true;
                if ( strlen( $qv['m'] ) > 9 ) {
                    $this->is_time = true;
                } elseif ( strlen( $qv['m'] ) > 7 ) {
                    $this->is_day = true;
                } elseif ( strlen( $qv['m'] ) > 5 ) {
                    $this->is_month = true;
                } else {
                    $this->is_year = true;
                }
            }

            if ( $qv['w'] ) {
                $this->is_date = true;
            }

            $this->query_vars_hash = false;
            $this->parse_tax_query( $qv );

            foreach ( $this->tax_query->queries as $tax_query ) {
                if ( ! is_array( $tax_query ) ) {
                    continue;
                }

                if ( isset( $tax_query['operator'] ) && 'NOT IN' !== $tax_query['operator'] ) {
                    switch ( $tax_query['taxonomy'] ) {
                        case 'category':
                            $this->is_category = true;
                            break;
                        case 'post_tag':
                            $this->is_tag = true;
                            break;
                        default:
                            $this->is_tax = true;
                    }
                }
            }
            unset( $tax_query );

            if ( empty( $qv['author'] ) || ( '0' == $qv['author'] ) ) {
                $this->is_author = false;
            } else {
                $this->is_author = true;
            }

            if ( '' !== $qv['author_name'] ) {
                $this->is_author = true;
            }

            if ( ! empty( $qv['post_type'] ) && ! is_array( $qv['post_type'] ) ) {
                $post_type_obj = get_post_type_object( $qv['post_type'] );
                if ( ! empty( $post_type_obj->has_archive ) ) {
                    $this->is_post_type_archive = true;
                }
            }

            if ( $this->is_post_type_archive || $this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax ) {
                $this->is_archive = true;
            }
        }

        if ( '' != $qv['feed'] ) {
            $this->is_feed = true;
        }

        if ( '' != $qv['embed'] ) {
            $this->is_embed = true;
        }

        if ( '' != $qv['tb'] ) {
            $this->is_trackback = true;
        }

        if ( '' != $qv['paged'] && ( (int) $qv['paged'] > 1 ) ) {
            $this->is_paged = true;
        }

        // If we're previewing inside the write screen.
        if ( '' != $qv['preview'] ) {
            $this->is_preview = true;
        }

        if ( is_admin() ) {
            $this->is_admin = true;
        }

        if ( str_contains( $qv['feed'], 'comments-' ) ) {
            $qv['feed']         = str_replace( 'comments-', '', $qv['feed'] );
            $qv['withcomments'] = 1;
        }

        $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;

        if ( $this->is_feed && ( ! empty( $qv['withcomments'] ) || ( empty( $qv['withoutcomments'] ) && $this->is_singular ) ) ) {
            $this->is_comment_feed = true;
        }

        if ( ! ( $this->is_singular || $this->is_archive || $this->is_search || $this->is_feed
                || ( wp_is_serving_rest_request() && $this->is_main_query() )
                || $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_robots || $this->is_favicon ) ) {
            $this->is_home = true;
        }

        // Correct `is_*` for 'page_on_front' and 'page_for_posts'.
        if ( $this->is_home && 'page' === get_option( 'show_on_front' ) && get_option( 'page_on_front' ) ) {
            $_query = wp_parse_args( $this->query );
            // 'pagename' can be set and empty depending on matched rewrite rules. Ignore an empty 'pagename'.
            if ( isset( $_query['pagename'] ) && '' === $_query['pagename'] ) {
                unset( $_query['pagename'] );
            }

            unset( $_query['embed'] );

            if ( empty( $_query ) || ! array_diff( array_keys( $_query ), array( 'preview', 'page', 'paged', 'cpage' ) ) ) {
                $this->is_page = true;
                $this->is_home = false;
                $qv['page_id'] = get_option( 'page_on_front' );
                // Correct <!--nextpage--> for 'page_on_front'.
                if ( ! empty( $qv['paged'] ) ) {
                    $qv['page'] = $qv['paged'];
                    unset( $qv['paged'] );
                }
            }
        }

        if ( '' !== $qv['pagename'] ) {
            $this->queried_object = get_page_by_path( $qv['pagename'] );

            if ( $this->queried_object && 'attachment' === $this->queried_object->post_type ) {
                if ( preg_match( '/^[^%]*%(?:postname)%/', get_option( 'permalink_structure' ) ) ) {
                    // See if we also have a post with the same slug.
                    $post = get_page_by_path( $qv['pagename'], OBJECT, 'post' );
                    if ( $post ) {
                        $this->queried_object = $post;
                        $this->is_page        = false;
                        $this->is_single      = true;
                    }
                }
            }

            if ( ! empty( $this->queried_object ) ) {
                $this->queried_object_id = (int) $this->queried_object->ID;
            } else {
                unset( $this->queried_object );
            }

            if ( 'page' === get_option( 'show_on_front' ) && isset( $this->queried_object_id ) && get_option( 'page_for_posts' ) == $this->queried_object_id ) {
                $this->is_page       = false;
                $this->is_home       = true;
                $this->is_posts_page = true;
            }

            if ( isset( $this->queried_object_id ) && get_option( 'wp_page_for_privacy_policy' ) == $this->queried_object_id ) {
                $this->is_privacy_policy = true;
            }
        }

        if ( $qv['page_id'] ) {
            if ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) == $qv['page_id'] ) {
                $this->is_page       = false;
                $this->is_home       = true;
                $this->is_posts_page = true;
            }

            if ( get_option( 'wp_page_for_privacy_policy' ) == $qv['page_id'] ) {
                $this->is_privacy_policy = true;
            }
        }

        if ( ! empty( $qv['post_type'] ) ) {
            if ( is_array( $qv['post_type'] ) ) {
                $qv['post_type'] = array_map( 'sanitize_key', $qv['post_type'] );
            } else {
                $qv['post_type'] = sanitize_key( $qv['post_type'] );
            }
        }

        if ( ! empty( $qv['post_status'] ) ) {
            if ( is_array( $qv['post_status'] ) ) {
                $qv['post_status'] = array_map( 'sanitize_key', $qv['post_status'] );
            } else {
                $qv['post_status'] = preg_replace( '|[^a-z0-9_,-]|', '', $qv['post_status'] );
            }
        }

        if ( $this->is_posts_page && ( ! isset( $qv['withcomments'] ) || ! $qv['withcomments'] ) ) {
            $this->is_comment_feed = false;
        }

        $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
        // Done correcting `is_*` for 'page_on_front' and 'page_for_posts'.

        if ( '404' == $qv['error'] ) {
            $this->set_404();
        }

        $this->is_embed = $this->is_embed && ( $this->is_singular || $this->is_404 );

        $this->query_vars_hash    = md5( serialize( $this->query_vars ) );
        $this->query_vars_changed = false;

        /**
         * Fires after the main query vars have been parsed.
         *
         * @since 1.5.0
         *
         * @param WP_Query $query The WP_Query instance (passed by reference).
         */
        do_action_ref_array( 'parse_query', array( &$this ) );
    }

    /**
     * Parses various taxonomy related query vars.
     *
     * For BC, this method is not marked as protected. See [28987].
     *
     * @since 3.1.0
     *
     * @param array $q The query variables. Passed by reference.
     */
    public function parse_tax_query( &$q ) {
        if ( ! empty( $q['tax_query'] ) && is_array( $q['tax_query'] ) ) {
            $tax_query = $q['tax_query'];
        } else {
            $tax_query = array();
        }

        if ( ! empty( $q['taxonomy'] ) && ! empty( $q['term'] ) ) {
            $tax_query[] = array(
                'taxonomy' => $q['taxonomy'],
                'terms'    => array( $q['term'] ),
                'field'    => 'slug',
            );
        }

        foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) {
            if ( 'post_tag' === $taxonomy ) {
                continue; // Handled further down in the $q['tag'] block.
            }

            if ( $t->query_var && ! empty( $q[ $t->query_var ] ) ) {
                $tax_query_defaults = array(
                    'taxonomy' => $taxonomy,
                    'field'    => 'slug',
                );

                if ( ! empty( $t->rewrite['hierarchical'] ) ) {
                    $q[ $t->query_var ] = wp_basename( $q[ $t->query_var ] );
                }

                $term = $q[ $t->query_var ];

                if ( is_array( $term ) ) {
                    $term = implode( ',', $term );
                }

                if ( str_contains( $term, '+' ) ) {
                    $terms = preg_split( '/[+]+/', $term );
                    foreach ( $terms as $term ) {
                        $tax_query[] = array_merge(
                            $tax_query_defaults,
                            array(
                                'terms' => array( $term ),
                            )
                        );
                    }
                } else {
                    $tax_query[] = array_merge(
                        $tax_query_defaults,
                        array(
                            'terms' => preg_split( '/[,]+/', $term ),
                        )
                    );
                }
            }
        }

        // If query string 'cat' is an array, implode it.
        if ( is_array( $q['cat'] ) ) {
            $q['cat'] = implode( ',', $q['cat'] );
        }

        // Category stuff.

        if ( ! empty( $q['cat'] ) && ! $this->is_singular ) {
            $cat_in     = array();
            $cat_not_in = array();

            $cat_array = preg_split( '/[,\s]+/', urldecode( $q['cat'] ) );
            $cat_array = array_map( 'intval', $cat_array );
            $q['cat']  = implode( ',', $cat_array );

            foreach ( $cat_array as $cat ) {
                if ( $cat > 0 ) {
                    $cat_in[] = $cat;
                } elseif ( $cat < 0 ) {
                    $cat_not_in[] = abs( $cat );
                }
            }

            if ( ! empty( $cat_in ) ) {
                $tax_query[] = array(
                    'taxonomy'         => 'category',
                    'terms'            => $cat_in,
                    'field'            => 'term_id',
                    'include_children' => true,
                );
            }

            if ( ! empty( $cat_not_in ) ) {
                $tax_query[] = array(
                    'taxonomy'         => 'category',
                    'terms'            => $cat_not_in,
                    'field'            => 'term_id',
                    'operator'         => 'NOT IN',
                    'include_children' => true,
                );
            }
            unset( $cat_array, $cat_in, $cat_not_in );
        }

        if ( ! empty( $q['category__and'] ) && 1 === count( (array) $q['category__and'] ) ) {
            $q['category__and'] = (array) $q['category__and'];
            if ( ! isset( $q['category__in'] ) ) {
                $q['category__in'] = array();
            }
            $q['category__in'][] = absint( reset( $q['category__and'] ) );
            unset( $q['category__and'] );
        }

        if ( ! empty( $q['category__in'] ) ) {
            $q['category__in'] = array_map( 'absint', array_unique( (array) $q['category__in'] ) );
            $tax_query[]       = array(
                'taxonomy'         => 'category',
                'terms'            => $q['category__in'],
                'field'            => 'term_id',
                'include_children' => false,
            );
        }

        if ( ! empty( $q['category__not_in'] ) ) {
            $q['category__not_in'] = array_map( 'absint', array_unique( (array) $q['category__not_in'] ) );
            $tax_query[]           = array(
                'taxonomy'         => 'category',
                'terms'            => $q['category__not_in'],
                'operator'         => 'NOT IN',
                'include_children' => false,
            );
        }

        if ( ! empty( $q['category__and'] ) ) {
            $q['category__and'] = array_map( 'absint', array_unique( (array) $q['category__and'] ) );
            $tax_query[]        = array(
                'taxonomy'         => 'category',
                'terms'            => $q['category__and'],
                'field'            => 'term_id',
                'operator'         => 'AND',
                'include_children' => false,
            );
        }

        // If query string 'tag' is array, implode it.
        if ( is_array( $q['tag'] ) ) {
            $q['tag'] = implode( ',', $q['tag'] );
        }

        // Tag stuff.

        if ( '' !== $q['tag'] && ! $this->is_singular && $this->query_vars_changed ) {
            if ( str_contains( $q['tag'], ',' ) ) {
                $tags = preg_split( '/[,\r\n\t ]+/', $q['tag'] );
                foreach ( (array) $tags as $tag ) {
                    $tag                 = sanitize_term_field( 'slug', $tag, 0, 'post_tag', 'db' );
                    $q['tag_slug__in'][] = $tag;
                }
            } elseif ( preg_match( '/[+\r\n\t ]+/', $q['tag'] ) || ! empty( $q['cat'] ) ) {
                $tags = preg_split( '/[+\r\n\t ]+/', $q['tag'] );
                foreach ( (array) $tags as $tag ) {
                    $tag                  = sanitize_term_field( 'slug', $tag, 0, 'post_tag', 'db' );
                    $q['tag_slug__and'][] = $tag;
                }
            } else {
                $q['tag']            = sanitize_term_field( 'slug', $q['tag'], 0, 'post_tag', 'db' );
                $q['tag_slug__in'][] = $q['tag'];
            }
        }

        if ( ! empty( $q['tag_id'] ) ) {
            $q['tag_id'] = absint( $q['tag_id'] );
            $tax_query[] = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag_id'],
            );
        }

        if ( ! empty( $q['tag__in'] ) ) {
            $q['tag__in'] = array_map( 'absint', array_unique( (array) $q['tag__in'] ) );
            $tax_query[]  = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag__in'],
            );
        }

        if ( ! empty( $q['tag__not_in'] ) ) {
            $q['tag__not_in'] = array_map( 'absint', array_unique( (array) $q['tag__not_in'] ) );
            $tax_query[]      = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag__not_in'],
                'operator' => 'NOT IN',
            );
        }

        if ( ! empty( $q['tag__and'] ) ) {
            $q['tag__and'] = array_map( 'absint', array_unique( (array) $q['tag__and'] ) );
            $tax_query[]   = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag__and'],
                'operator' => 'AND',
            );
        }

        if ( ! empty( $q['tag_slug__in'] ) ) {
            $q['tag_slug__in'] = array_map( 'sanitize_title_for_query', array_unique( (array) $q['tag_slug__in'] ) );
            $tax_query[]       = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag_slug__in'],
                'field'    => 'slug',
            );
        }

        if ( ! empty( $q['tag_slug__and'] ) ) {
            $q['tag_slug__and'] = array_map( 'sanitize_title_for_query', array_unique( (array) $q['tag_slug__and'] ) );
            $tax_query[]        = array(
                'taxonomy' => 'post_tag',
                'terms'    => $q['tag_slug__and'],
                'field'    => 'slug',
                'operator' => 'AND',
            );
        }

        $this->tax_query = new WP_Tax_Query( $tax_query );

        /**
         * Fires after taxonomy-related query vars have been parsed.
         *
         * @since 3.7.0
         *
         * @param WP_Query $query The WP_Query instance.
         */
        do_action( 'parse_tax_query', $this );
    }

    /**
     * Generates SQL for the WHERE clause based on passed search terms.
     *
     * @since 3.7.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param array $q Query variables.
     * @return string WHERE clause.
     */
    protected function parse_search( &$q ) {
        global $wpdb;

        $search = '';

        // Added slashes screw with quote grouping when done early, so done later.
        $q['s'] = stripslashes( $q['s'] );
        if ( empty( $_GET['s'] ) && $this->is_main_query() ) {
            $q['s'] = urldecode( $q['s'] );
        }
        // There are no line breaks in <input /> fields.
        $q['s']                  = str_replace( array( "\r", "\n" ), '', $q['s'] );
        $q['search_terms_count'] = 1;
        if ( ! empty( $q['sentence'] ) ) {
            $q['search_terms'] = array( $q['s'] );
        } else {
            if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', $q['s'], $matches ) ) {
                $q['search_terms_count'] = count( $matches[0] );
                $q['search_terms']       = $this->parse_search_terms( $matches[0] );
                // If the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence.
                if ( empty( $q['search_terms'] ) || count( $q['search_terms'] ) > 9 ) {
                    $q['search_terms'] = array( $q['s'] );
                }
            } else {
                $q['search_terms'] = array( $q['s'] );
            }
        }

        $n                         = ! empty( $q['exact'] ) ? '' : '%';
        $searchand                 = '';
        $q['search_orderby_title'] = array();

        $default_search_columns = array( 'post_title', 'post_excerpt', 'post_content' );
        $search_columns         = ! empty( $q['search_columns'] ) ? $q['search_columns'] : $default_search_columns;
        if ( ! is_array( $search_columns ) ) {
            $search_columns = array( $search_columns );
        }

        /**
         * Filters the columns to search in a WP_Query search.
         *
         * The supported columns are `post_title`, `post_excerpt` and `post_content`.
         * They are all included by default.
         *
         * @since 6.2.0
         *
         * @param string[] $search_columns Array of column names to be searched.
         * @param string   $search         Text being searched.
         * @param WP_Query $query          The current WP_Query instance.
         */
        $search_columns = (array) apply_filters( 'post_search_columns', $search_columns, $q['s'], $this );

        // Use only supported search columns.
        $search_columns = array_intersect( $search_columns, $default_search_columns );
        if ( empty( $search_columns ) ) {
            $search_columns = $default_search_columns;
        }

        /**
         * Filters the prefix that indicates that a search term should be excluded from results.
         *
         * @since 4.7.0
         *
         * @param string $exclusion_prefix The prefix. Default '-'. Returning
         *                                 an empty value disables exclusions.
         */
        $exclusion_prefix = apply_filters( 'wp_query_search_exclusion_prefix', '-' );

        foreach ( $q['search_terms'] as $term ) {
            // If there is an $exclusion_prefix, terms prefixed with it should be excluded.
            $exclude = $exclusion_prefix && str_starts_with( $term, $exclusion_prefix );
            if ( $exclude ) {
                $like_op  = 'NOT LIKE';
                $andor_op = 'AND';
                $term     = substr( $term, 1 );
            } else {
                $like_op  = 'LIKE';
                $andor_op = 'OR';
            }

            if ( $n && ! $exclude ) {
                $like                        = '%' . $wpdb->esc_like( $term ) . '%';
                $q['search_orderby_title'][] = $wpdb->prepare( "{$wpdb->posts}.post_title LIKE %s", $like );
            }

            $like = $n . $wpdb->esc_like( $term ) . $n;

            $search_columns_parts = array();
            foreach ( $search_columns as $search_column ) {
                $search_columns_parts[ $search_column ] = $wpdb->prepare( "({$wpdb->posts}.$search_column $like_op %s)", $like );
            }

            if ( ! empty( $this->allow_query_attachment_by_filename ) ) {
                $search_columns_parts['attachment'] = $wpdb->prepare( "(sq1.meta_value $like_op %s)", $like );
            }

            $search .= "$searchand(" . implode( " $andor_op ", $search_columns_parts ) . ')';

            $searchand = ' AND ';
        }

        if ( ! empty( $search ) ) {
            $search = " AND ({$search}) ";
            if ( ! is_user_logged_in() ) {
                $search .= " AND ({$wpdb->posts}.post_password = '') ";
            }
        }

        return $search;
    }

    /**
     * Checks if the terms are suitable for searching.
     *
     * Uses an array of stopwords (terms) that are excluded from the separate
     * term matching when searching for posts. The list of English stopwords is
     * the approximate search engines list, and is translatable.
     *
     * @since 3.7.0
     *
     * @param string[] $terms Array of terms to check.
     * @return string[] Terms that are not stopwords.
     */
    protected function parse_search_terms( $terms ) {
        $strtolower = function_exists( 'mb_strtolower' ) ? 'mb_strtolower' : 'strtolower';
        $checked    = array();

        $stopwords = $this->get_search_stopwords();

        foreach ( $terms as $term ) {
            // Keep before/after spaces when term is for exact match.
            if ( preg_match( '/^".+"$/', $term ) ) {
                $term = trim( $term, "\"'" );
            } else {
                $term = trim( $term, "\"' " );
            }

            // Avoid single A-Z and single dashes.
            if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z\-]$/i', $term ) ) ) {
                continue;
            }

            if ( in_array( call_user_func( $strtolower, $term ), $stopwords, true ) ) {
                continue;
            }

            $checked[] = $term;
        }

        return $checked;
    }

    /**
     * Retrieves stopwords used when parsing search terms.
     *
     * @since 3.7.0
     *
     * @return string[] Stopwords.
     */
    protected function get_search_stopwords() {
        if ( isset( $this->stopwords ) ) {
            return $this->stopwords;
        }

        /*
         * translators: This is a comma-separated list of very common words that should be excluded from a search,
         * like a, an, and the. These are usually called "stopwords". You should not simply translate these individual
         * words into your language. Instead, look for and provide commonly accepted stopwords in your language.
         */
        $words = explode(
            ',',
            _x(
                'about,an,are,as,at,be,by,com,for,from,how,in,is,it,of,on,or,that,the,this,to,was,what,when,where,who,will,with,www',
                'Comma-separated list of search stopwords in your language'
            )
        );

        $stopwords = array();
        foreach ( $words as $word ) {
            $word = trim( $word, "\r\n\t " );
            if ( $word ) {
                $stopwords[] = $word;
            }
        }

        /**
         * Filters stopwords used when parsing search terms.
         *
         * @since 3.7.0
         *
         * @param string[] $stopwords Array of stopwords.
         */
        $this->stopwords = apply_filters( 'wp_search_stopwords', $stopwords );
        return $this->stopwords;
    }

    /**
     * Generates SQL for the ORDER BY condition based on passed search terms.
     *
     * @since 3.7.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param array $q Query variables.
     * @return string ORDER BY clause.
     */
    protected function parse_search_order( &$q ) {
        global $wpdb;

        if ( $q['search_terms_count'] > 1 ) {
            $num_terms = count( $q['search_orderby_title'] );

            // If the search terms contain negative queries, don't bother ordering by sentence matches.
            $like = '';
            if ( ! preg_match( '/(?:\s|^)\-/', $q['s'] ) ) {
                $like = '%' . $wpdb->esc_like( $q['s'] ) . '%';
            }

            $search_orderby = '';

            // Sentence match in 'post_title'.
            if ( $like ) {
                $search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_title LIKE %s THEN 1 ", $like );
            }

            /*
             * Sanity limit, sort as sentence when more than 6 terms
             * (few searches are longer than 6 terms and most titles are not).
             */
            if ( $num_terms < 7 ) {
                // All words in title.
                $search_orderby .= 'WHEN ' . implode( ' AND ', $q['search_orderby_title'] ) . ' THEN 2 ';
                // Any word in title, not needed when $num_terms == 1.
                if ( $num_terms > 1 ) {
                    $search_orderby .= 'WHEN ' . implode( ' OR ', $q['search_orderby_title'] ) . ' THEN 3 ';
                }
            }

            // Sentence match in 'post_content' and 'post_excerpt'.
            if ( $like ) {
                $search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_excerpt LIKE %s THEN 4 ", $like );
                $search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_content LIKE %s THEN 5 ", $like );
            }

            if ( $search_orderby ) {
                $search_orderby = '(CASE ' . $search_orderby . 'ELSE 6 END)';
            }
        } else {
            // Single word or sentence search.
            $search_orderby = reset( $q['search_orderby_title'] ) . ' DESC';
        }

        return $search_orderby;
    }

    /**
     * Converts the given orderby alias (if allowed) to a properly-prefixed value.
     *
     * @since 4.0.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param string $orderby Alias for the field to order by.
     * @return string|false Table-prefixed value to used in the ORDER clause. False otherwise.
     */
    protected function parse_orderby( $orderby ) {
        global $wpdb;

        // Used to filter values.
        $allowed_keys = array(
            'post_name',
            'post_author',
            'post_date',
            'post_title',
            'post_modified',
            'post_parent',
            'post_type',
            'name',
            'author',
            'date',
            'title',
            'modified',
            'parent',
            'type',
            'ID',
            'menu_order',
            'comment_count',
            'rand',
            'post__in',
            'post_parent__in',
            'post_name__in',
        );

        $primary_meta_key   = '';
        $primary_meta_query = false;
        $meta_clauses       = $this->meta_query->get_clauses();
        if ( ! empty( $meta_clauses ) ) {
            $primary_meta_query = reset( $meta_clauses );

            if ( ! empty( $primary_meta_query['key'] ) ) {
                $primary_meta_key = $primary_meta_query['key'];
                $allowed_keys[]   = $primary_meta_key;
            }

            $allowed_keys[] = 'meta_value';
            $allowed_keys[] = 'meta_value_num';
            $allowed_keys   = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
        }

        // If RAND() contains a seed value, sanitize and add to allowed keys.
        $rand_with_seed = false;
        if ( preg_match( '/RAND\(([0-9]+)\)/i', $orderby, $matches ) ) {
            $orderby        = sprintf( 'RAND(%s)', (int) $matches[1] );
            $allowed_keys[] = $orderby;
            $rand_with_seed = true;
        }

        if ( ! in_array( $orderby, $allowed_keys, true ) ) {
            return false;
        }

        $orderby_clause = '';

        switch ( $orderby ) {
            case 'post_name':
            case 'post_author':
            case 'post_date':
            case 'post_title':
            case 'post_modified':
            case 'post_parent':
            case 'post_type':
            case 'ID':
            case 'menu_order':
            case 'comment_count':
                $orderby_clause = "{$wpdb->posts}.{$orderby}";
                break;
            case 'rand':
                $orderby_clause = 'RAND()';
                break;
            case $primary_meta_key:
            case 'meta_value':
                if ( ! empty( $primary_meta_query['type'] ) ) {
                    $orderby_clause = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
                } else {
                    $orderby_clause = "{$primary_meta_query['alias']}.meta_value";
                }
                break;
            case 'meta_value_num':
                $orderby_clause = "{$primary_meta_query['alias']}.meta_value+0";
                break;
            case 'post__in':
                if ( ! empty( $this->query_vars['post__in'] ) ) {
                    $orderby_clause = "FIELD({$wpdb->posts}.ID," . implode( ',', array_map( 'absint', $this->query_vars['post__in'] ) ) . ')';
                }
                break;
            case 'post_parent__in':
                if ( ! empty( $this->query_vars['post_parent__in'] ) ) {
                    $orderby_clause = "FIELD( {$wpdb->posts}.post_parent," . implode( ', ', array_map( 'absint', $this->query_vars['post_parent__in'] ) ) . ' )';
                }
                break;
            case 'post_name__in':
                if ( ! empty( $this->query_vars['post_name__in'] ) ) {
                    $post_name__in        = array_map( 'sanitize_title_for_query', $this->query_vars['post_name__in'] );
                    $post_name__in_string = "'" . implode( "','", $post_name__in ) . "'";
                    $orderby_clause       = "FIELD( {$wpdb->posts}.post_name," . $post_name__in_string . ' )';
                }
                break;
            default:
                if ( array_key_exists( $orderby, $meta_clauses ) ) {
                    // $orderby corresponds to a meta_query clause.
                    $meta_clause    = $meta_clauses[ $orderby ];
                    $orderby_clause = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
                } elseif ( $rand_with_seed ) {
                    $orderby_clause = $orderby;
                } else {
                    // Default: order by post field.
                    $orderby_clause = "{$wpdb->posts}.post_" . sanitize_key( $orderby );
                }

                break;
        }

        return $orderby_clause;
    }

    /**
     * Parse an 'order' query variable and cast it to ASC or DESC as necessary.
     *
     * @since 4.0.0
     *
     * @param string $order The 'order' query variable.
     * @return string The sanitized 'order' query variable.
     */
    protected function parse_order( $order ) {
        if ( ! is_string( $order ) || empty( $order ) ) {
            return 'DESC';
        }

        if ( 'ASC' === strtoupper( $order ) ) {
            return 'ASC';
        } else {
            return 'DESC';
        }
    }

    /**
     * Sets the 404 property and saves whether query is feed.
     *
     * @since 2.0.0
     */
    public function set_404() {
        $is_feed = $this->is_feed;

        $this->init_query_flags();
        $this->is_404 = true;

        $this->is_feed = $is_feed;

        /**
         * Fires after a 404 is triggered.
         *
         * @since 5.5.0
         *
         * @param WP_Query $query The WP_Query instance (passed by reference).
         */
        do_action_ref_array( 'set_404', array( $this ) );
    }

    /**
     * Retrieves the value of a query variable.
     *
     * @since 1.5.0
     * @since 3.9.0 The `$default_value` argument was introduced.
     *
     * @param string $query_var     Query variable key.
     * @param mixed  $default_value Optional. Value to return if the query variable is not set.
     *                              Default empty string.
     * @return mixed Contents of the query variable.
     */
    public function get( $query_var, $default_value = '' ) {
        if ( isset( $this->query_vars[ $query_var ] ) ) {
            return $this->query_vars[ $query_var ];
        }

        return $default_value;
    }

    /**
     * Sets the value of a query variable.
     *
     * @since 1.5.0
     *
     * @param string $query_var Query variable key.
     * @param mixed  $value     Query variable value.
     */
    public function set( $query_var, $value ) {
        $this->query_vars[ $query_var ] = $value;
    }

    /**
     * Retrieves an array of posts based on query variables.
     *
     * There are a few filters and actions that can be used to modify the post
     * database query.
     *
     * @since 1.5.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @return WP_Post[]|int[] Array of post objects or post IDs.
     */
    public function get_posts() {
        global $wpdb;

        $this->parse_query();

        /**
         * Fires after the query variable object is created, but before the actual query is run.
         *
         * Note: If using conditional tags, use the method versions within the passed instance
         * (e.g. $this->is_main_query() instead of is_main_query()). This is because the functions
         * like is_main_query() test against the global $wp_query instance, not the passed one.
         *
         * @since 2.0.0
         *
         * @param WP_Query $query The WP_Query instance (passed by reference).
         */
        do_action_ref_array( 'pre_get_posts', array( &$this ) );

        // Shorthand.
        $q = &$this->query_vars;

        // Fill again in case 'pre_get_posts' unset some vars.
        $q = $this->fill_query_vars( $q );

        /**
         * Filters whether an attachment query should include filenames or not.
         *
         * @since 6.0.3
         *
         * @param bool $allow_query_attachment_by_filename Whether or not to include filenames.
         */
        $this->allow_query_attachment_by_filename = apply_filters( 'wp_allow_query_attachment_by_filename', false );
        remove_all_filters( 'wp_allow_query_attachment_by_filename' );

        // Parse meta query.
        $this->meta_query = new WP_Meta_Query();
        $this->meta_query->parse_query_vars( $q );

        // Set a flag if a 'pre_get_posts' hook changed the query vars.
        $hash = md5( serialize( $this->query_vars ) );
        if ( $hash != $this->query_vars_hash ) {
            $this->query_vars_changed = true;
            $this->query_vars_hash    = $hash;
        }
        unset( $hash );

        // First let's clear some variables.
        $distinct         = '';
        $whichauthor      = '';
        $whichmimetype    = '';
        $where            = '';
        $limits           = '';
        $join             = '';
        $search           = '';
        $groupby          = '';
        $post_status_join = false;
        $page             = 1;

        if ( isset( $q['caller_get_posts'] ) ) {
            _deprecated_argument(
                'WP_Query',
                '3.1.0',
                sprintf(
                    /* translators: 1: caller_get_posts, 2: ignore_sticky_posts */
                    __( '%1$s is deprecated. Use %2$s instead.' ),
                    '<code>caller_get_posts</code>',
                    '<code>ignore_sticky_posts</code>'
                )
            );

            if ( ! isset( $q['ignore_sticky_posts'] ) ) {
                $q['ignore_sticky_posts'] = $q['caller_get_posts'];
            }
        }

        if ( ! isset( $q['ignore_sticky_posts'] ) ) {
            $q['ignore_sticky_posts'] = false;
        }

        if ( ! isset( $q['suppress_filters'] ) ) {
            $q['suppress_filters'] = false;
        }

        if ( ! isset( $q['cache_results'] ) ) {
            $q['cache_results'] = true;
        }

        if ( ! isset( $q['update_post_term_cache'] ) ) {
            $q['update_post_term_cache'] = true;
        }

        if ( ! isset( $q['update_menu_item_cache'] ) ) {
            $q['update_menu_item_cache'] = false;
        }

        if ( ! isset( $q['lazy_load_term_meta'] ) ) {
            $q['lazy_load_term_meta'] = $q['update_post_term_cache'];
        } elseif ( $q['lazy_load_term_meta'] ) { // Lazy loading term meta only works if term caches are primed.
            $q['update_post_term_cache'] = true;
        }

        if ( ! isset( $q['update_post_meta_cache'] ) ) {
            $q['update_post_meta_cache'] = true;
        }

        if ( ! isset( $q['post_type'] ) ) {
            if ( $this->is_search ) {
                $q['post_type'] = 'any';
            } else {
                $q['post_type'] = '';
            }
        }
        $post_type = $q['post_type'];
        if ( empty( $q['posts_per_page'] ) ) {
            $q['posts_per_page'] = get_option( 'posts_per_page' );
        }
        if ( isset( $q['showposts'] ) && $q['showposts'] ) {
            $q['showposts']      = (int) $q['showposts'];
            $q['posts_per_page'] = $q['showposts'];
        }
        if ( ( isset( $q['posts_per_archive_page'] ) && 0 != $q['posts_per_archive_page'] ) && ( $this->is_archive || $this->is_search ) ) {
            $q['posts_per_page'] = $q['posts_per_archive_page'];
        }
        if ( ! isset( $q['nopaging'] ) ) {
            if ( -1 == $q['posts_per_page'] ) {
                $q['nopaging'] = true;
            } else {
                $q['nopaging'] = false;
            }
        }

        if ( $this->is_feed ) {
            // This overrides 'posts_per_page'.
            if ( ! empty( $q['posts_per_rss'] ) ) {
                $q['posts_per_page'] = $q['posts_per_rss'];
            } else {
                $q['posts_per_page'] = get_option( 'posts_per_rss' );
            }
            $q['nopaging'] = false;
        }
        $q['posts_per_page'] = (int) $q['posts_per_page'];
        if ( $q['posts_per_page'] < -1 ) {
            $q['posts_per_page'] = abs( $q['posts_per_page'] );
        } elseif ( 0 == $q['posts_per_page'] ) {
            $q['posts_per_page'] = 1;
        }

        if ( ! isset( $q['comments_per_page'] ) || 0 == $q['comments_per_page'] ) {
            $q['comments_per_page'] = get_option( 'comments_per_page' );
        }

        if ( $this->is_home && ( empty( $this->query ) || 'true' === $q['preview'] ) && ( 'page' === get_option( 'show_on_front' ) ) && get_option( 'page_on_front' ) ) {
            $this->is_page = true;
            $this->is_home = false;
            $q['page_id']  = get_option( 'page_on_front' );
        }

        if ( isset( $q['page'] ) ) {
            $q['page'] = is_scalar( $q['page'] ) ? absint( trim( $q['page'], '/' ) ) : 0;
        }

        // If true, forcibly turns off SQL_CALC_FOUND_ROWS even when limits are present.
        if ( isset( $q['no_found_rows'] ) ) {
            $q['no_found_rows'] = (bool) $q['no_found_rows'];
        } else {
            $q['no_found_rows'] = false;
        }

        switch ( $q['fields'] ) {
            case 'ids':
                $fields = "{$wpdb->posts}.ID";
                break;
            case 'id=>parent':
                $fields = "{$wpdb->posts}.ID, {$wpdb->posts}.post_parent";
                break;
            default:
                $fields = "{$wpdb->posts}.*";
        }

        if ( '' !== $q['menu_order'] ) {
            $where .= " AND {$wpdb->posts}.menu_order = " . $q['menu_order'];
        }
        // The "m" parameter is meant for months but accepts datetimes of varying specificity.
        if ( $q['m'] ) {
            $where .= " AND YEAR({$wpdb->posts}.post_date)=" . substr( $q['m'], 0, 4 );
            if ( strlen( $q['m'] ) > 5 ) {
                $where .= " AND MONTH({$wpdb->posts}.post_date)=" . substr( $q['m'], 4, 2 );
            }
            if ( strlen( $q['m'] ) > 7 ) {
                $where .= " AND DAYOFMONTH({$wpdb->posts}.post_date)=" . substr( $q['m'], 6, 2 );
            }
            if ( strlen( $q['m'] ) > 9 ) {
                $where .= " AND HOUR({$wpdb->posts}.post_date)=" . substr( $q['m'], 8, 2 );
            }
            if ( strlen( $q['m'] ) > 11 ) {
                $where .= " AND MINUTE({$wpdb->posts}.post_date)=" . substr( $q['m'], 10, 2 );
            }
            if ( strlen( $q['m'] ) > 13 ) {
                $where .= " AND SECOND({$wpdb->posts}.post_date)=" . substr( $q['m'], 12, 2 );
            }
        }

        // Handle the other individual date parameters.
        $date_parameters = array();

        if ( '' !== $q['hour'] ) {
            $date_parameters['hour'] = $q['hour'];
        }

        if ( '' !== $q['minute'] ) {
            $date_parameters['minute'] = $q['minute'];
        }

        if ( '' !== $q['second'] ) {
            $date_parameters['second'] = $q['second'];
        }

        if ( $q['year'] ) {
            $date_parameters['year'] = $q['year'];
        }

        if ( $q['monthnum'] ) {
            $date_parameters['monthnum'] = $q['monthnum'];
        }

        if ( $q['w'] ) {
            $date_parameters['week'] = $q['w'];
        }

        if ( $q['day'] ) {
            $date_parameters['day'] = $q['day'];
        }

        if ( $date_parameters ) {
            $date_query = new WP_Date_Query( array( $date_parameters ) );
            $where     .= $date_query->get_sql();
        }
        unset( $date_parameters, $date_query );

        // Handle complex date queries.
        if ( ! empty( $q['date_query'] ) ) {
            $this->date_query = new WP_Date_Query( $q['date_query'] );
            $where           .= $this->date_query->get_sql();
        }

        // If we've got a post_type AND it's not "any" post_type.
        if ( ! empty( $q['post_type'] ) && 'any' !== $q['post_type'] ) {
            foreach ( (array) $q['post_type'] as $_post_type ) {
                $ptype_obj = get_post_type_object( $_post_type );
                if ( ! $ptype_obj || ! $ptype_obj->query_var || empty( $q[ $ptype_obj->query_var ] ) ) {
                    continue;
                }

                if ( ! $ptype_obj->hierarchical ) {
                    // Non-hierarchical post types can directly use 'name'.
                    $q['name'] = $q[ $ptype_obj->query_var ];
                } else {
                    // Hierarchical post types will operate through 'pagename'.
                    $q['pagename'] = $q[ $ptype_obj->query_var ];
                    $q['name']     = '';
                }

                // Only one request for a slug is possible, this is why name & pagename are overwritten above.
                break;
            } // End foreach.
            unset( $ptype_obj );
        }

        if ( '' !== $q['title'] ) {
            $where .= $wpdb->prepare( " AND {$wpdb->posts}.post_title = %s", stripslashes( $q['title'] ) );
        }

        // Parameters related to 'post_name'.
        if ( '' !== $q['name'] ) {
            $q['name'] = sanitize_title_for_query( $q['name'] );
            $where    .= " AND {$wpdb->posts}.post_name = '" . $q['name'] . "'";
        } elseif ( '' !== $q['pagename'] ) {
            if ( isset( $this->queried_object_id ) ) {
                $reqpage = $this->queried_object_id;
            } else {
                if ( 'page' !== $q['post_type'] ) {
                    foreach ( (array) $q['post_type'] as $_post_type ) {
                        $ptype_obj = get_post_type_object( $_post_type );
                        if ( ! $ptype_obj || ! $ptype_obj->hierarchical ) {
                            continue;
                        }

                        $reqpage = get_page_by_path( $q['pagename'], OBJECT, $_post_type );
                        if ( $reqpage ) {
                            break;
                        }
                    }
                    unset( $ptype_obj );
                } else {
                    $reqpage = get_page_by_path( $q['pagename'] );
                }
                if ( ! empty( $reqpage ) ) {
                    $reqpage = $reqpage->ID;
                } else {
                    $reqpage = 0;
                }
            }

            $page_for_posts = get_option( 'page_for_posts' );
            if ( ( 'page' !== get_option( 'show_on_front' ) ) || empty( $page_for_posts ) || ( $reqpage != $page_for_posts ) ) {
                $q['pagename'] = sanitize_title_for_query( wp_basename( $q['pagename'] ) );
                $q['name']     = $q['pagename'];
                $where        .= " AND ({$wpdb->posts}.ID = '$reqpage')";
                $reqpage_obj   = get_post( $reqpage );
                if ( is_object( $reqpage_obj ) && 'attachment' === $reqpage_obj->post_type ) {
                    $this->is_attachment = true;
                    $post_type           = 'attachment';
                    $q['post_type']      = 'attachment';
                    $this->is_page       = true;
                    $q['attachment_id']  = $reqpage;
                }
            }
        } elseif ( '' !== $q['attachment'] ) {
            $q['attachment'] = sanitize_title_for_query( wp_basename( $q['attachment'] ) );
            $q['name']       = $q['attachment'];
            $where          .= " AND {$wpdb->posts}.post_name = '" . $q['attachment'] . "'";
        } elseif ( is_array( $q['post_name__in'] ) && ! empty( $q['post_name__in'] ) ) {
            $q['post_name__in'] = array_map( 'sanitize_title_for_query', $q['post_name__in'] );
            $post_name__in      = "'" . implode( "','", $q['post_name__in'] ) . "'";
            $where             .= " AND {$wpdb->posts}.post_name IN ($post_name__in)";
        }

        // If an attachment is requested by number, let it supersede any post number.
        if ( $q['attachment_id'] ) {
            $q['p'] = absint( $q['attachment_id'] );
        }

        // If a post number is specified, load that post.
        if ( $q['p'] ) {
            $where .= " AND {$wpdb->posts}.ID = " . $q['p'];
        } elseif ( $q['post__in'] ) {
            $post__in = implode( ',', array_map( 'absint', $q['post__in'] ) );
            $where   .= " AND {$wpdb->posts}.ID IN ($post__in)";
        } elseif ( $q['post__not_in'] ) {
            $post__not_in = implode( ',', array_map( 'absint', $q['post__not_in'] ) );
            $where       .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
        }

        if ( is_numeric( $q['post_parent'] ) ) {
            $where .= $wpdb->prepare( " AND {$wpdb->posts}.post_parent = %d ", $q['post_parent'] );
        } elseif ( $q['post_parent__in'] ) {
            $post_parent__in = implode( ',', array_map( 'absint', $q['post_parent__in'] ) );
            $where          .= " AND {$wpdb->posts}.post_parent IN ($post_parent__in)";
        } elseif ( $q['post_parent__not_in'] ) {
            $post_parent__not_in = implode( ',', array_map( 'absint', $q['post_parent__not_in'] ) );
            $where              .= " AND {$wpdb->posts}.post_parent NOT IN ($post_parent__not_in)";
        }

        if ( $q['page_id'] ) {
            if ( ( 'page' !== get_option( 'show_on_front' ) ) || ( get_option( 'page_for_posts' ) != $q['page_id'] ) ) {
                $q['p'] = $q['page_id'];
                $where  = " AND {$wpdb->posts}.ID = " . $q['page_id'];
            }
        }

        // If a search pattern is specified, load the posts that match.
        if ( strlen( $q['s'] ) ) {
            $search = $this->parse_search( $q );
        }

        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the search SQL that is used in the WHERE clause of WP_Query.
             *
             * @since 3.0.0
             *
             * @param string   $search Search SQL for WHERE clause.
             * @param WP_Query $query  The current WP_Query object.
             */
            $search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
        }

        // Taxonomies.
        if ( ! $this->is_singular ) {
            $this->parse_tax_query( $q );

            $clauses = $this->tax_query->get_sql( $wpdb->posts, 'ID' );

            $join  .= $clauses['join'];
            $where .= $clauses['where'];
        }

        if ( $this->is_tax ) {
            if ( empty( $post_type ) ) {
                // Do a fully inclusive search for currently registered post types of queried taxonomies.
                $post_type  = array();
                $taxonomies = array_keys( $this->tax_query->queried_terms );
                foreach ( get_post_types( array( 'exclude_from_search' => false ) ) as $pt ) {
                    $object_taxonomies = 'attachment' === $pt ? get_taxonomies_for_attachments() : get_object_taxonomies( $pt );
                    if ( array_intersect( $taxonomies, $object_taxonomies ) ) {
                        $post_type[] = $pt;
                    }
                }
                if ( ! $post_type ) {
                    $post_type = 'any';
                } elseif ( count( $post_type ) === 1 ) {
                    $post_type = $post_type[0];
                }

                $post_status_join = true;
            } elseif ( in_array( 'attachment', (array) $post_type, true ) ) {
                $post_status_join = true;
            }
        }

        /*
         * Ensure that 'taxonomy', 'term', 'term_id', 'cat', and
         * 'category_name' vars are set for backward compatibility.
         */
        if ( ! empty( $this->tax_query->queried_terms ) ) {

            /*
             * Set 'taxonomy', 'term', and 'term_id' to the
             * first taxonomy other than 'post_tag' or 'category'.
             */
            if ( ! isset( $q['taxonomy'] ) ) {
                foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
                    if ( empty( $queried_items['terms'][0] ) ) {
                        continue;
                    }

                    if ( ! in_array( $queried_taxonomy, array( 'category', 'post_tag' ), true ) ) {
                        $q['taxonomy'] = $queried_taxonomy;

                        if ( 'slug' === $queried_items['field'] ) {
                            $q['term'] = $queried_items['terms'][0];
                        } else {
                            $q['term_id'] = $queried_items['terms'][0];
                        }

                        // Take the first one we find.
                        break;
                    }
                }
            }

            // 'cat', 'category_name', 'tag_id'.
            foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
                if ( empty( $queried_items['terms'][0] ) ) {
                    continue;
                }

                if ( 'category' === $queried_taxonomy ) {
                    $the_cat = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'category' );
                    if ( $the_cat ) {
                        $this->set( 'cat', $the_cat->term_id );
                        $this->set( 'category_name', $the_cat->slug );
                    }
                    unset( $the_cat );
                }

                if ( 'post_tag' === $queried_taxonomy ) {
                    $the_tag = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'post_tag' );
                    if ( $the_tag ) {
                        $this->set( 'tag_id', $the_tag->term_id );
                    }
                    unset( $the_tag );
                }
            }
        }

        if ( ! empty( $this->tax_query->queries ) || ! empty( $this->meta_query->queries ) || ! empty( $this->allow_query_attachment_by_filename ) ) {
            $groupby = "{$wpdb->posts}.ID";
        }

        // Author/user stuff.

        if ( ! empty( $q['author'] ) && '0' != $q['author'] ) {
            $q['author'] = addslashes_gpc( '' . urldecode( $q['author'] ) );
            $authors     = array_unique( array_map( 'intval', preg_split( '/[,\s]+/', $q['author'] ) ) );
            foreach ( $authors as $author ) {
                $key         = $author > 0 ? 'author__in' : 'author__not_in';
                $q[ $key ][] = abs( $author );
            }
            $q['author'] = implode( ',', $authors );
        }

        if ( ! empty( $q['author__not_in'] ) ) {
            $author__not_in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__not_in'] ) ) );
            $where         .= " AND {$wpdb->posts}.post_author NOT IN ($author__not_in) ";
        } elseif ( ! empty( $q['author__in'] ) ) {
            $author__in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__in'] ) ) );
            $where     .= " AND {$wpdb->posts}.post_author IN ($author__in) ";
        }

        // Author stuff for nice URLs.

        if ( '' !== $q['author_name'] ) {
            if ( str_contains( $q['author_name'], '/' ) ) {
                $q['author_name'] = explode( '/', $q['author_name'] );
                if ( $q['author_name'][ count( $q['author_name'] ) - 1 ] ) {
                    $q['author_name'] = $q['author_name'][ count( $q['author_name'] ) - 1 ]; // No trailing slash.
                } else {
                    $q['author_name'] = $q['author_name'][ count( $q['author_name'] ) - 2 ]; // There was a trailing slash.
                }
            }
            $q['author_name'] = sanitize_title_for_query( $q['author_name'] );
            $q['author']      = get_user_by( 'slug', $q['author_name'] );
            if ( $q['author'] ) {
                $q['author'] = $q['author']->ID;
            }
            $whichauthor .= " AND ({$wpdb->posts}.post_author = " . absint( $q['author'] ) . ')';
        }

        // Matching by comment count.
        if ( isset( $q['comment_count'] ) ) {
            // Numeric comment count is converted to array format.
            if ( is_numeric( $q['comment_count'] ) ) {
                $q['comment_count'] = array(
                    'value' => (int) $q['comment_count'],
                );
            }

            if ( isset( $q['comment_count']['value'] ) ) {
                $q['comment_count'] = array_merge(
                    array(
                        'compare' => '=',
                    ),
                    $q['comment_count']
                );

                // Fallback for invalid compare operators is '='.
                $compare_operators = array( '=', '!=', '>', '>=', '<', '<=' );
                if ( ! in_array( $q['comment_count']['compare'], $compare_operators, true ) ) {
                    $q['comment_count']['compare'] = '=';
                }

                $where .= $wpdb->prepare( " AND {$wpdb->posts}.comment_count {$q['comment_count']['compare']} %d", $q['comment_count']['value'] );
            }
        }

        // MIME-Type stuff for attachment browsing.

        if ( isset( $q['post_mime_type'] ) && '' !== $q['post_mime_type'] ) {
            $whichmimetype = wp_post_mime_type_where( $q['post_mime_type'], $wpdb->posts );
        }
        $where .= $search . $whichauthor . $whichmimetype;

        if ( ! empty( $this->allow_query_attachment_by_filename ) ) {
            $join .= " LEFT JOIN {$wpdb->postmeta} AS sq1 ON ( {$wpdb->posts}.ID = sq1.post_id AND sq1.meta_key = '_wp_attached_file' )";
        }

        if ( ! empty( $this->meta_query->queries ) ) {
            $clauses = $this->meta_query->get_sql( 'post', $wpdb->posts, 'ID', $this );
            $join   .= $clauses['join'];
            $where  .= $clauses['where'];
        }

        $rand = ( isset( $q['orderby'] ) && 'rand' === $q['orderby'] );
        if ( ! isset( $q['order'] ) ) {
            $q['order'] = $rand ? '' : 'DESC';
        } else {
            $q['order'] = $rand ? '' : $this->parse_order( $q['order'] );
        }

        // These values of orderby should ignore the 'order' parameter.
        $force_asc = array( 'post__in', 'post_name__in', 'post_parent__in' );
        if ( isset( $q['orderby'] ) && in_array( $q['orderby'], $force_asc, true ) ) {
            $q['order'] = '';
        }

        // Order by.
        if ( empty( $q['orderby'] ) ) {
            /*
             * Boolean false or empty array blanks out ORDER BY,
             * while leaving the value unset or otherwise empty sets the default.
             */
            if ( isset( $q['orderby'] ) && ( is_array( $q['orderby'] ) || false === $q['orderby'] ) ) {
                $orderby = '';
            } else {
                $orderby = "{$wpdb->posts}.post_date " . $q['order'];
            }
        } elseif ( 'none' === $q['orderby'] ) {
            $orderby = '';
        } else {
            $orderby_array = array();
            if ( is_array( $q['orderby'] ) ) {
                foreach ( $q['orderby'] as $_orderby => $order ) {
                    $orderby = addslashes_gpc( urldecode( $_orderby ) );
                    $parsed  = $this->parse_orderby( $orderby );

                    if ( ! $parsed ) {
                        continue;
                    }

                    $orderby_array[] = $parsed . ' ' . $this->parse_order( $order );
                }
                $orderby = implode( ', ', $orderby_array );

            } else {
                $q['orderby'] = urldecode( $q['orderby'] );
                $q['orderby'] = addslashes_gpc( $q['orderby'] );

                foreach ( explode( ' ', $q['orderby'] ) as $i => $orderby ) {
                    $parsed = $this->parse_orderby( $orderby );
                    // Only allow certain values for safety.
                    if ( ! $parsed ) {
                        continue;
                    }

                    $orderby_array[] = $parsed;
                }
                $orderby = implode( ' ' . $q['order'] . ', ', $orderby_array );

                if ( empty( $orderby ) ) {
                    $orderby = "{$wpdb->posts}.post_date " . $q['order'];
                } elseif ( ! empty( $q['order'] ) ) {
                    $orderby .= " {$q['order']}";
                }
            }
        }

        // Order search results by relevance only when another "orderby" is not specified in the query.
        if ( ! empty( $q['s'] ) ) {
            $search_orderby = '';
            if ( ! empty( $q['search_orderby_title'] ) && ( empty( $q['orderby'] ) && ! $this->is_feed ) || ( isset( $q['orderby'] ) && 'relevance' === $q['orderby'] ) ) {
                $search_orderby = $this->parse_search_order( $q );
            }

            if ( ! $q['suppress_filters'] ) {
                /**
                 * Filters the ORDER BY used when ordering search results.
                 *
                 * @since 3.7.0
                 *
                 * @param string   $search_orderby The ORDER BY clause.
                 * @param WP_Query $query          The current WP_Query instance.
                 */
                $search_orderby = apply_filters( 'posts_search_orderby', $search_orderby, $this );
            }

            if ( $search_orderby ) {
                $orderby = $orderby ? $search_orderby . ', ' . $orderby : $search_orderby;
            }
        }

        if ( is_array( $post_type ) && count( $post_type ) > 1 ) {
            $post_type_cap = 'multiple_post_type';
        } else {
            if ( is_array( $post_type ) ) {
                $post_type = reset( $post_type );
            }
            $post_type_object = get_post_type_object( $post_type );
            if ( empty( $post_type_object ) ) {
                $post_type_cap = $post_type;
            }
        }

        if ( isset( $q['post_password'] ) ) {
            $where .= $wpdb->prepare( " AND {$wpdb->posts}.post_password = %s", $q['post_password'] );
            if ( empty( $q['perm'] ) ) {
                $q['perm'] = 'readable';
            }
        } elseif ( isset( $q['has_password'] ) ) {
            $where .= sprintf( " AND {$wpdb->posts}.post_password %s ''", $q['has_password'] ? '!=' : '=' );
        }

        if ( ! empty( $q['comment_status'] ) ) {
            $where .= $wpdb->prepare( " AND {$wpdb->posts}.comment_status = %s ", $q['comment_status'] );
        }

        if ( ! empty( $q['ping_status'] ) ) {
            $where .= $wpdb->prepare( " AND {$wpdb->posts}.ping_status = %s ", $q['ping_status'] );
        }

        $skip_post_status = false;
        if ( 'any' === $post_type ) {
            $in_search_post_types = get_post_types( array( 'exclude_from_search' => false ) );
            if ( empty( $in_search_post_types ) ) {
                $post_type_where  = ' AND 1=0 ';
                $skip_post_status = true;
            } else {
                $post_type_where = " AND {$wpdb->posts}.post_type IN ('" . implode( "', '", array_map( 'esc_sql', $in_search_post_types ) ) . "')";
            }
        } elseif ( ! empty( $post_type ) && is_array( $post_type ) ) {
            $post_type_where = " AND {$wpdb->posts}.post_type IN ('" . implode( "', '", esc_sql( $post_type ) ) . "')";
        } elseif ( ! empty( $post_type ) ) {
            $post_type_where  = $wpdb->prepare( " AND {$wpdb->posts}.post_type = %s", $post_type );
            $post_type_object = get_post_type_object( $post_type );
        } elseif ( $this->is_attachment ) {
            $post_type_where  = " AND {$wpdb->posts}.post_type = 'attachment'";
            $post_type_object = get_post_type_object( 'attachment' );
        } elseif ( $this->is_page ) {
            $post_type_where  = " AND {$wpdb->posts}.post_type = 'page'";
            $post_type_object = get_post_type_object( 'page' );
        } else {
            $post_type_where  = " AND {$wpdb->posts}.post_type = 'post'";
            $post_type_object = get_post_type_object( 'post' );
        }

        $edit_cap = 'edit_post';
        $read_cap = 'read_post';

        if ( ! empty( $post_type_object ) ) {
            $edit_others_cap  = $post_type_object->cap->edit_others_posts;
            $read_private_cap = $post_type_object->cap->read_private_posts;
        } else {
            $edit_others_cap  = 'edit_others_' . $post_type_cap . 's';
            $read_private_cap = 'read_private_' . $post_type_cap . 's';
        }

        $user_id = get_current_user_id();

        $q_status = array();
        if ( $skip_post_status ) {
            $where .= $post_type_where;
        } elseif ( ! empty( $q['post_status'] ) ) {

            $where .= $post_type_where;

            $statuswheres = array();
            $q_status     = $q['post_status'];
            if ( ! is_array( $q_status ) ) {
                $q_status = explode( ',', $q_status );
            }
            $r_status = array();
            $p_status = array();
            $e_status = array();
            if ( in_array( 'any', $q_status, true ) ) {
                foreach ( get_post_stati( array( 'exclude_from_search' => true ) ) as $status ) {
                    if ( ! in_array( $status, $q_status, true ) ) {
                        $e_status[] = "{$wpdb->posts}.post_status <> '$status'";
                    }
                }
            } else {
                foreach ( get_post_stati() as $status ) {
                    if ( in_array( $status, $q_status, true ) ) {
                        if ( 'private' === $status ) {
                            $p_status[] = "{$wpdb->posts}.post_status = '$status'";
                        } else {
                            $r_status[] = "{$wpdb->posts}.post_status = '$status'";
                        }
                    }
                }
            }

            if ( empty( $q['perm'] ) || 'readable' !== $q['perm'] ) {
                $r_status = array_merge( $r_status, $p_status );
                unset( $p_status );
            }

            if ( ! empty( $e_status ) ) {
                $statuswheres[] = '(' . implode( ' AND ', $e_status ) . ')';
            }
            if ( ! empty( $r_status ) ) {
                if ( ! empty( $q['perm'] ) && 'editable' === $q['perm'] && ! current_user_can( $edit_others_cap ) ) {
                    $statuswheres[] = "({$wpdb->posts}.post_author = $user_id " . 'AND (' . implode( ' OR ', $r_status ) . '))';
                } else {
                    $statuswheres[] = '(' . implode( ' OR ', $r_status ) . ')';
                }
            }
            if ( ! empty( $p_status ) ) {
                if ( ! empty( $q['perm'] ) && 'readable' === $q['perm'] && ! current_user_can( $read_private_cap ) ) {
                    $statuswheres[] = "({$wpdb->posts}.post_author = $user_id " . 'AND (' . implode( ' OR ', $p_status ) . '))';
                } else {
                    $statuswheres[] = '(' . implode( ' OR ', $p_status ) . ')';
                }
            }
            if ( $post_status_join ) {
                $join .= " LEFT JOIN {$wpdb->posts} AS p2 ON ({$wpdb->posts}.post_parent = p2.ID) ";
                foreach ( $statuswheres as $index => $statuswhere ) {
                    $statuswheres[ $index ] = "($statuswhere OR ({$wpdb->posts}.post_status = 'inherit' AND " . str_replace( $wpdb->posts, 'p2', $statuswhere ) . '))';
                }
            }
            $where_status = implode( ' OR ', $statuswheres );
            if ( ! empty( $where_status ) ) {
                $where .= " AND ($where_status)";
            }
        } elseif ( ! $this->is_singular ) {
            if ( 'any' === $post_type ) {
                $queried_post_types = get_post_types( array( 'exclude_from_search' => false ) );
            } elseif ( is_array( $post_type ) ) {
                $queried_post_types = $post_type;
            } elseif ( ! empty( $post_type ) ) {
                $queried_post_types = array( $post_type );
            } else {
                $queried_post_types = array( 'post' );
            }

            if ( ! empty( $queried_post_types ) ) {

                $status_type_clauses = array();

                foreach ( $queried_post_types as $queried_post_type ) {

                    $queried_post_type_object = get_post_type_object( $queried_post_type );

                    $type_where = '(' . $wpdb->prepare( "{$wpdb->posts}.post_type = %s AND (", $queried_post_type );

                    // Public statuses.
                    $public_statuses = get_post_stati( array( 'public' => true ) );
                    $status_clauses  = array();
                    foreach ( $public_statuses as $public_status ) {
                        $status_clauses[] = "{$wpdb->posts}.post_status = '$public_status'";
                    }
                    $type_where .= implode( ' OR ', $status_clauses );

                    // Add protected states that should show in the admin all list.
                    if ( $this->is_admin ) {
                        $admin_all_statuses = get_post_stati(
                            array(
                                'protected'              => true,
                                'show_in_admin_all_list' => true,
                            )
                        );
                        foreach ( $admin_all_statuses as $admin_all_status ) {
                            $type_where .= " OR {$wpdb->posts}.post_status = '$admin_all_status'";
                        }
                    }

                    // Add private states that are visible to current user.
                    if ( is_user_logged_in() && $queried_post_type_object instanceof WP_Post_Type ) {
                        $read_private_cap = $queried_post_type_object->cap->read_private_posts;
                        $private_statuses = get_post_stati( array( 'private' => true ) );
                        foreach ( $private_statuses as $private_status ) {
                            $type_where .= current_user_can( $read_private_cap ) ? " \nOR {$wpdb->posts}.post_status = '$private_status'" : " \nOR ({$wpdb->posts}.post_author = $user_id AND {$wpdb->posts}.post_status = '$private_status')";
                        }
                    }

                    $type_where .= '))';

                    $status_type_clauses[] = $type_where;
                }

                if ( ! empty( $status_type_clauses ) ) {
                    $where .= ' AND (' . implode( ' OR ', $status_type_clauses ) . ')';
                }
            } else {
                $where .= ' AND 1=0 ';
            }
        } else {
            $where .= $post_type_where;
        }

        /*
         * Apply filters on where and join prior to paging so that any
         * manipulations to them are reflected in the paging by day queries.
         */
        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the WHERE clause of the query.
             *
             * @since 1.5.0
             *
             * @param string   $where The WHERE clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $where = apply_filters_ref_array( 'posts_where', array( $where, &$this ) );

            /**
             * Filters the JOIN clause of the query.
             *
             * @since 1.5.0
             *
             * @param string   $join  The JOIN clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $join = apply_filters_ref_array( 'posts_join', array( $join, &$this ) );
        }

        // Paging.
        if ( empty( $q['nopaging'] ) && ! $this->is_singular ) {
            $page = absint( $q['paged'] );
            if ( ! $page ) {
                $page = 1;
            }

            // If 'offset' is provided, it takes precedence over 'paged'.
            if ( isset( $q['offset'] ) && is_numeric( $q['offset'] ) ) {
                $q['offset'] = absint( $q['offset'] );
                $pgstrt      = $q['offset'] . ', ';
            } else {
                $pgstrt = absint( ( $page - 1 ) * $q['posts_per_page'] ) . ', ';
            }
            $limits = 'LIMIT ' . $pgstrt . $q['posts_per_page'];
        }

        // Comments feeds.
        if ( $this->is_comment_feed && ! $this->is_singular ) {
            if ( $this->is_archive || $this->is_search ) {
                $cjoin    = "JOIN {$wpdb->posts} ON ( {$wpdb->comments}.comment_post_ID = {$wpdb->posts}.ID ) $join ";
                $cwhere   = "WHERE comment_approved = '1' $where";
                $cgroupby = "{$wpdb->comments}.comment_id";
            } else { // Other non-singular, e.g. front.
                $cjoin    = "JOIN {$wpdb->posts} ON ( {$wpdb->comments}.comment_post_ID = {$wpdb->posts}.ID )";
                $cwhere   = "WHERE ( post_status = 'publish' OR ( post_status = 'inherit' AND post_type = 'attachment' ) ) AND comment_approved = '1'";
                $cgroupby = '';
            }

            if ( ! $q['suppress_filters'] ) {
                /**
                 * Filters the JOIN clause of the comments feed query before sending.
                 *
                 * @since 2.2.0
                 *
                 * @param string   $cjoin The JOIN clause of the query.
                 * @param WP_Query $query The WP_Query instance (passed by reference).
                 */
                $cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) );

                /**
                 * Filters the WHERE clause of the comments feed query before sending.
                 *
                 * @since 2.2.0
                 *
                 * @param string   $cwhere The WHERE clause of the query.
                 * @param WP_Query $query  The WP_Query instance (passed by reference).
                 */
                $cwhere = apply_filters_ref_array( 'comment_feed_where', array( $cwhere, &$this ) );

                /**
                 * Filters the GROUP BY clause of the comments feed query before sending.
                 *
                 * @since 2.2.0
                 *
                 * @param string   $cgroupby The GROUP BY clause of the query.
                 * @param WP_Query $query    The WP_Query instance (passed by reference).
                 */
                $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) );

                /**
                 * Filters the ORDER BY clause of the comments feed query before sending.
                 *
                 * @since 2.8.0
                 *
                 * @param string   $corderby The ORDER BY clause of the query.
                 * @param WP_Query $query    The WP_Query instance (passed by reference).
                 */
                $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );

                /**
                 * Filters the LIMIT clause of the comments feed query before sending.
                 *
                 * @since 2.8.0
                 *
                 * @param string   $climits The JOIN clause of the query.
                 * @param WP_Query $query   The WP_Query instance (passed by reference).
                 */
                $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) );
            }

            $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
            $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
            $climits  = ( ! empty( $climits ) ) ? $climits : '';

            $comments_request = "SELECT $distinct {$wpdb->comments}.comment_ID FROM {$wpdb->comments} $cjoin $cwhere $cgroupby $corderby $climits";

            $key          = md5( $comments_request );
            $last_changed = wp_cache_get_last_changed( 'comment' ) . ':' . wp_cache_get_last_changed( 'posts' );

            $cache_key   = "comment_feed:$key:$last_changed";
            $comment_ids = wp_cache_get( $cache_key, 'comment-queries' );
            if ( false === $comment_ids ) {
                $comment_ids = $wpdb->get_col( $comments_request );
                wp_cache_add( $cache_key, $comment_ids, 'comment-queries' );
            }
            _prime_comment_caches( $comment_ids );

            // Convert to WP_Comment.
            /** @var WP_Comment[] */
            $this->comments      = array_map( 'get_comment', $comment_ids );
            $this->comment_count = count( $this->comments );

            $post_ids = array();

            foreach ( $this->comments as $comment ) {
                $post_ids[] = (int) $comment->comment_post_ID;
            }

            $post_ids = implode( ',', $post_ids );
            $join     = '';
            if ( $post_ids ) {
                $where = "AND {$wpdb->posts}.ID IN ($post_ids) ";
            } else {
                $where = 'AND 0';
            }
        }

        $pieces = array( 'where', 'groupby', 'join', 'orderby', 'distinct', 'fields', 'limits' );

        /*
         * Apply post-paging filters on where and join. Only plugins that
         * manipulate paging queries should use these hooks.
         */
        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the WHERE clause of the query.
             *
             * Specifically for manipulating paging queries.
             *
             * @since 1.5.0
             *
             * @param string   $where The WHERE clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $where = apply_filters_ref_array( 'posts_where_paged', array( $where, &$this ) );

            /**
             * Filters the GROUP BY clause of the query.
             *
             * @since 2.0.0
             *
             * @param string   $groupby The GROUP BY clause of the query.
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $groupby = apply_filters_ref_array( 'posts_groupby', array( $groupby, &$this ) );

            /**
             * Filters the JOIN clause of the query.
             *
             * Specifically for manipulating paging queries.
             *
             * @since 1.5.0
             *
             * @param string   $join  The JOIN clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $join = apply_filters_ref_array( 'posts_join_paged', array( $join, &$this ) );

            /**
             * Filters the ORDER BY clause of the query.
             *
             * @since 1.5.1
             *
             * @param string   $orderby The ORDER BY clause of the query.
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $orderby = apply_filters_ref_array( 'posts_orderby', array( $orderby, &$this ) );

            /**
             * Filters the DISTINCT clause of the query.
             *
             * @since 2.1.0
             *
             * @param string   $distinct The DISTINCT clause of the query.
             * @param WP_Query $query    The WP_Query instance (passed by reference).
             */
            $distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) );

            /**
             * Filters the LIMIT clause of the query.
             *
             * @since 2.1.0
             *
             * @param string   $limits The LIMIT clause of the query.
             * @param WP_Query $query  The WP_Query instance (passed by reference).
             */
            $limits = apply_filters_ref_array( 'post_limits', array( $limits, &$this ) );

            /**
             * Filters the SELECT clause of the query.
             *
             * @since 2.1.0
             *
             * @param string   $fields The SELECT clause of the query.
             * @param WP_Query $query  The WP_Query instance (passed by reference).
             */
            $fields = apply_filters_ref_array( 'posts_fields', array( $fields, &$this ) );

            /**
             * Filters all query clauses at once, for convenience.
             *
             * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
             * fields (SELECT), and LIMIT clauses.
             *
             * @since 3.1.0
             *
             * @param string[] $clauses {
             *     Associative array of the clauses for the query.
             *
             *     @type string $where    The WHERE clause of the query.
             *     @type string $groupby  The GROUP BY clause of the query.
             *     @type string $join     The JOIN clause of the query.
             *     @type string $orderby  The ORDER BY clause of the query.
             *     @type string $distinct The DISTINCT clause of the query.
             *     @type string $fields   The SELECT clause of the query.
             *     @type string $limits   The LIMIT clause of the query.
             * }
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );

            $where    = isset( $clauses['where'] ) ? $clauses['where'] : '';
            $groupby  = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
            $join     = isset( $clauses['join'] ) ? $clauses['join'] : '';
            $orderby  = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
            $distinct = isset( $clauses['distinct'] ) ? $clauses['distinct'] : '';
            $fields   = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
            $limits   = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
        }

        /**
         * Fires to announce the query's current selection parameters.
         *
         * For use by caching plugins.
         *
         * @since 2.3.0
         *
         * @param string $selection The assembled selection query.
         */
        do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );

        /*
         * Filters again for the benefit of caching plugins.
         * Regular plugins should use the hooks above.
         */
        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the WHERE clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $where The WHERE clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $where = apply_filters_ref_array( 'posts_where_request', array( $where, &$this ) );

            /**
             * Filters the GROUP BY clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $groupby The GROUP BY clause of the query.
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $groupby = apply_filters_ref_array( 'posts_groupby_request', array( $groupby, &$this ) );

            /**
             * Filters the JOIN clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $join  The JOIN clause of the query.
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            $join = apply_filters_ref_array( 'posts_join_request', array( $join, &$this ) );

            /**
             * Filters the ORDER BY clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $orderby The ORDER BY clause of the query.
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $orderby = apply_filters_ref_array( 'posts_orderby_request', array( $orderby, &$this ) );

            /**
             * Filters the DISTINCT clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $distinct The DISTINCT clause of the query.
             * @param WP_Query $query    The WP_Query instance (passed by reference).
             */
            $distinct = apply_filters_ref_array( 'posts_distinct_request', array( $distinct, &$this ) );

            /**
             * Filters the SELECT clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $fields The SELECT clause of the query.
             * @param WP_Query $query  The WP_Query instance (passed by reference).
             */
            $fields = apply_filters_ref_array( 'posts_fields_request', array( $fields, &$this ) );

            /**
             * Filters the LIMIT clause of the query.
             *
             * For use by caching plugins.
             *
             * @since 2.5.0
             *
             * @param string   $limits The LIMIT clause of the query.
             * @param WP_Query $query  The WP_Query instance (passed by reference).
             */
            $limits = apply_filters_ref_array( 'post_limits_request', array( $limits, &$this ) );

            /**
             * Filters all query clauses at once, for convenience.
             *
             * For use by caching plugins.
             *
             * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
             * fields (SELECT), and LIMIT clauses.
             *
             * @since 3.1.0
             *
             * @param string[] $clauses {
             *     Associative array of the clauses for the query.
             *
             *     @type string $where    The WHERE clause of the query.
             *     @type string $groupby  The GROUP BY clause of the query.
             *     @type string $join     The JOIN clause of the query.
             *     @type string $orderby  The ORDER BY clause of the query.
             *     @type string $distinct The DISTINCT clause of the query.
             *     @type string $fields   The SELECT clause of the query.
             *     @type string $limits   The LIMIT clause of the query.
             * }
             * @param WP_Query $query  The WP_Query instance (passed by reference).
             */
            $clauses = (array) apply_filters_ref_array( 'posts_clauses_request', array( compact( $pieces ), &$this ) );

            $where    = isset( $clauses['where'] ) ? $clauses['where'] : '';
            $groupby  = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
            $join     = isset( $clauses['join'] ) ? $clauses['join'] : '';
            $orderby  = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
            $distinct = isset( $clauses['distinct'] ) ? $clauses['distinct'] : '';
            $fields   = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
            $limits   = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
        }

        if ( ! empty( $groupby ) ) {
            $groupby = 'GROUP BY ' . $groupby;
        }
        if ( ! empty( $orderby ) ) {
            $orderby = 'ORDER BY ' . $orderby;
        }

        $found_rows = '';
        if ( ! $q['no_found_rows'] && ! empty( $limits ) ) {
            $found_rows = 'SQL_CALC_FOUND_ROWS';
        }

        // Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841.
        $old_request =
            "SELECT $found_rows $distinct $fields
             FROM {$wpdb->posts} $join
             WHERE 1=1 $where
             $groupby
             $orderby
             $limits";

        $this->request = $old_request;

        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the completed SQL query before sending.
             *
             * @since 2.0.0
             *
             * @param string   $request The complete SQL query.
             * @param WP_Query $query   The WP_Query instance (passed by reference).
             */
            $this->request = apply_filters_ref_array( 'posts_request', array( $this->request, &$this ) );
        }

        /**
         * Filters the posts array before the query takes place.
         *
         * Return a non-null value to bypass WordPress' default post queries.
         *
         * Filtering functions that require pagination information are encouraged to set
         * the `found_posts` and `max_num_pages` properties of the WP_Query object,
         * passed to the filter by reference. If WP_Query does not perform a database
         * query, it will not have enough information to generate these values itself.
         *
         * @since 4.6.0
         *
         * @param WP_Post[]|int[]|null $posts Return an array of post data to short-circuit WP's query,
         *                                    or null to allow WP to run its normal queries.
         * @param WP_Query             $query The WP_Query instance (passed by reference).
         */
        $this->posts = apply_filters_ref_array( 'posts_pre_query', array( null, &$this ) );

        /*
         * Ensure the ID database query is able to be cached.
         *
         * Random queries are expected to have unpredictable results and
         * cannot be cached. Note the space before `RAND` in the string
         * search, that to ensure against a collision with another
         * function.
         *
         * If `$fields` has been modified by the `posts_fields`,
         * `posts_fields_request`, `post_clauses` or `posts_clauses_request`
         * filters, then caching is disabled to prevent caching collisions.
         */
        $id_query_is_cacheable = ! str_contains( strtoupper( $orderby ), ' RAND(' );

        $cacheable_field_values = array(
            "{$wpdb->posts}.*",
            "{$wpdb->posts}.ID, {$wpdb->posts}.post_parent",
            "{$wpdb->posts}.ID",
        );

        if ( ! in_array( $fields, $cacheable_field_values, true ) ) {
            $id_query_is_cacheable = false;
        }

        if ( $q['cache_results'] && $id_query_is_cacheable ) {
            $new_request = str_replace( $fields, "{$wpdb->posts}.*", $this->request );
            $cache_key   = $this->generate_cache_key( $q, $new_request );

            $cache_found = false;
            if ( null === $this->posts ) {
                $cached_results = wp_cache_get( $cache_key, 'post-queries', false, $cache_found );

                if ( $cached_results ) {
                    /** @var int[] */
                    $post_ids = array_map( 'intval', $cached_results['posts'] );

                    $this->post_count    = count( $post_ids );
                    $this->found_posts   = $cached_results['found_posts'];
                    $this->max_num_pages = $cached_results['max_num_pages'];

                    if ( 'ids' === $q['fields'] ) {
                        $this->posts = $post_ids;

                        return $this->posts;
                    } elseif ( 'id=>parent' === $q['fields'] ) {
                        _prime_post_parent_id_caches( $post_ids );

                        $post_parent_cache_keys = array();
                        foreach ( $post_ids as $post_id ) {
                            $post_parent_cache_keys[] = 'post_parent:' . (string) $post_id;
                        }

                        /** @var int[] */
                        $post_parents = wp_cache_get_multiple( $post_parent_cache_keys, 'posts' );

                        foreach ( $post_parents as $cache_key => $post_parent ) {
                            $obj              = new stdClass();
                            $obj->ID          = (int) str_replace( 'post_parent:', '', $cache_key );
                            $obj->post_parent = (int) $post_parent;

                            $this->posts[] = $obj;
                        }

                        return $post_parents;
                    } else {
                        _prime_post_caches( $post_ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
                        /** @var WP_Post[] */
                        $this->posts = array_map( 'get_post', $post_ids );
                    }
                }
            }
        }

        if ( 'ids' === $q['fields'] ) {
            if ( null === $this->posts ) {
                $this->posts = $wpdb->get_col( $this->request );
            }

            /** @var int[] */
            $this->posts      = array_map( 'intval', $this->posts );
            $this->post_count = count( $this->posts );
            $this->set_found_posts( $q, $limits );

            if ( $q['cache_results'] && $id_query_is_cacheable ) {
                $cache_value = array(
                    'posts'         => $this->posts,
                    'found_posts'   => $this->found_posts,
                    'max_num_pages' => $this->max_num_pages,
                );

                wp_cache_set( $cache_key, $cache_value, 'post-queries' );
            }

            return $this->posts;
        }

        if ( 'id=>parent' === $q['fields'] ) {
            if ( null === $this->posts ) {
                $this->posts = $wpdb->get_results( $this->request );
            }

            $this->post_count = count( $this->posts );
            $this->set_found_posts( $q, $limits );

            /** @var int[] */
            $post_parents       = array();
            $post_ids           = array();
            $post_parents_cache = array();

            foreach ( $this->posts as $key => $post ) {
                $this->posts[ $key ]->ID          = (int) $post->ID;
                $this->posts[ $key ]->post_parent = (int) $post->post_parent;

                $post_parents[ (int) $post->ID ] = (int) $post->post_parent;
                $post_ids[]                      = (int) $post->ID;

                $post_parents_cache[ 'post_parent:' . (string) $post->ID ] = (int) $post->post_parent;
            }
            // Prime post parent caches, so that on second run, there is not another database query.
            wp_cache_add_multiple( $post_parents_cache, 'posts' );

            if ( $q['cache_results'] && $id_query_is_cacheable ) {
                $cache_value = array(
                    'posts'         => $post_ids,
                    'found_posts'   => $this->found_posts,
                    'max_num_pages' => $this->max_num_pages,
                );

                wp_cache_set( $cache_key, $cache_value, 'post-queries' );
            }

            return $post_parents;
        }

        $is_unfiltered_query = $old_request == $this->request && "{$wpdb->posts}.*" === $fields;

        if ( null === $this->posts ) {
            $split_the_query = (
                $is_unfiltered_query
                && (
                    wp_using_ext_object_cache()
                    || ( ! empty( $limits ) && $q['posts_per_page'] < 500 )
                )
            );

            /**
             * Filters whether to split the query.
             *
             * Splitting the query will cause it to fetch just the IDs of the found posts
             * (and then individually fetch each post by ID), rather than fetching every
             * complete row at once. One massive result vs. many small results.
             *
             * @since 3.4.0
             *
             * @param bool     $split_the_query Whether or not to split the query.
             * @param WP_Query $query           The WP_Query instance.
             */
            $split_the_query = apply_filters( 'split_the_query', $split_the_query, $this );

            if ( $split_the_query ) {
                // First get the IDs and then fill in the objects.

                // Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841.
                $this->request =
                    "SELECT $found_rows $distinct {$wpdb->posts}.ID
                     FROM {$wpdb->posts} $join
                     WHERE 1=1 $where
                     $groupby
                     $orderby
                     $limits";

                /**
                 * Filters the Post IDs SQL request before sending.
                 *
                 * @since 3.4.0
                 *
                 * @param string   $request The post ID request.
                 * @param WP_Query $query   The WP_Query instance.
                 */
                $this->request = apply_filters( 'posts_request_ids', $this->request, $this );

                $post_ids = $wpdb->get_col( $this->request );

                if ( $post_ids ) {
                    $this->posts = $post_ids;
                    $this->set_found_posts( $q, $limits );
                    _prime_post_caches( $post_ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
                } else {
                    $this->posts = array();
                }
            } else {
                $this->posts = $wpdb->get_results( $this->request );
                $this->set_found_posts( $q, $limits );
            }
        }

        // Convert to WP_Post objects.
        if ( $this->posts ) {
            /** @var WP_Post[] */
            $this->posts = array_map( 'get_post', $this->posts );
        }

        $unfiltered_posts = $this->posts;

        if ( $q['cache_results'] && $id_query_is_cacheable && ! $cache_found ) {
            $post_ids = wp_list_pluck( $this->posts, 'ID' );

            $cache_value = array(
                'posts'         => $post_ids,
                'found_posts'   => $this->found_posts,
                'max_num_pages' => $this->max_num_pages,
            );

            wp_cache_set( $cache_key, $cache_value, 'post-queries' );
        }

        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the raw post results array, prior to status checks.
             *
             * @since 2.3.0
             *
             * @param WP_Post[] $posts Array of post objects.
             * @param WP_Query  $query The WP_Query instance (passed by reference).
             */
            $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
        }

        if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) {
            /** This filter is documented in wp-includes/query.php */
            $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );

            /** This filter is documented in wp-includes/query.php */
            $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );

            /** This filter is documented in wp-includes/query.php */
            $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) );
            $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';

            /** This filter is documented in wp-includes/query.php */
            $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
            $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';

            /** This filter is documented in wp-includes/query.php */
            $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) );

            $comments_request = "SELECT {$wpdb->comments}.comment_ID FROM {$wpdb->comments} $cjoin $cwhere $cgroupby $corderby $climits";

            $comment_key          = md5( $comments_request );
            $comment_last_changed = wp_cache_get_last_changed( 'comment' );

            $comment_cache_key = "comment_feed:$comment_key:$comment_last_changed";
            $comment_ids       = wp_cache_get( $comment_cache_key, 'comment-queries' );
            if ( false === $comment_ids ) {
                $comment_ids = $wpdb->get_col( $comments_request );
                wp_cache_add( $comment_cache_key, $comment_ids, 'comment-queries' );
            }
            _prime_comment_caches( $comment_ids );

            // Convert to WP_Comment.
            /** @var WP_Comment[] */
            $this->comments      = array_map( 'get_comment', $comment_ids );
            $this->comment_count = count( $this->comments );
        }

        // Check post status to determine if post should be displayed.
        if ( ! empty( $this->posts ) && ( $this->is_single || $this->is_page ) ) {
            $status = get_post_status( $this->posts[0] );

            if ( 'attachment' === $this->posts[0]->post_type && 0 === (int) $this->posts[0]->post_parent ) {
                $this->is_page       = false;
                $this->is_single     = true;
                $this->is_attachment = true;
            }

            // If the post_status was specifically requested, let it pass through.
            if ( ! in_array( $status, $q_status, true ) ) {
                $post_status_obj = get_post_status_object( $status );

                if ( $post_status_obj && ! $post_status_obj->public ) {
                    if ( ! is_user_logged_in() ) {
                        // User must be logged in to view unpublished posts.
                        $this->posts = array();
                    } else {
                        if ( $post_status_obj->protected ) {
                            // User must have edit permissions on the draft to preview.
                            if ( ! current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
                                $this->posts = array();
                            } else {
                                $this->is_preview = true;
                                if ( 'future' !== $status ) {
                                    $this->posts[0]->post_date = current_time( 'mysql' );
                                }
                            }
                        } elseif ( $post_status_obj->private ) {
                            if ( ! current_user_can( $read_cap, $this->posts[0]->ID ) ) {
                                $this->posts = array();
                            }
                        } else {
                            $this->posts = array();
                        }
                    }
                } elseif ( ! $post_status_obj ) {
                    // Post status is not registered, assume it's not public.
                    if ( ! current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
                        $this->posts = array();
                    }
                }
            }

            if ( $this->is_preview && $this->posts && current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
                /**
                 * Filters the single post for preview mode.
                 *
                 * @since 2.7.0
                 *
                 * @param WP_Post  $post_preview  The Post object.
                 * @param WP_Query $query         The WP_Query instance (passed by reference).
                 */
                $this->posts[0] = get_post( apply_filters_ref_array( 'the_preview', array( $this->posts[0], &$this ) ) );
            }
        }

        // Put sticky posts at the top of the posts array.
        $sticky_posts = get_option( 'sticky_posts' );
        if ( $this->is_home && $page <= 1 && is_array( $sticky_posts ) && ! empty( $sticky_posts ) && ! $q['ignore_sticky_posts'] ) {
            $num_posts     = count( $this->posts );
            $sticky_offset = 0;
            // Loop over posts and relocate stickies to the front.
            for ( $i = 0; $i < $num_posts; $i++ ) {
                if ( in_array( $this->posts[ $i ]->ID, $sticky_posts, true ) ) {
                    $sticky_post = $this->posts[ $i ];
                    // Remove sticky from current position.
                    array_splice( $this->posts, $i, 1 );
                    // Move to front, after other stickies.
                    array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
                    // Increment the sticky offset. The next sticky will be placed at this offset.
                    ++$sticky_offset;
                    // Remove post from sticky posts array.
                    $offset = array_search( $sticky_post->ID, $sticky_posts, true );
                    unset( $sticky_posts[ $offset ] );
                }
            }

            // If any posts have been excluded specifically, Ignore those that are sticky.
            if ( ! empty( $sticky_posts ) && ! empty( $q['post__not_in'] ) ) {
                $sticky_posts = array_diff( $sticky_posts, $q['post__not_in'] );
            }

            // Fetch sticky posts that weren't in the query results.
            if ( ! empty( $sticky_posts ) ) {
                $stickies = get_posts(
                    array(
                        'post__in'               => $sticky_posts,
                        'post_type'              => $post_type,
                        'post_status'            => 'publish',
                        'posts_per_page'         => count( $sticky_posts ),
                        'suppress_filters'       => $q['suppress_filters'],
                        'cache_results'          => $q['cache_results'],
                        'update_post_meta_cache' => $q['update_post_meta_cache'],
                        'update_post_term_cache' => $q['update_post_term_cache'],
                        'lazy_load_term_meta'    => $q['lazy_load_term_meta'],
                    )
                );

                foreach ( $stickies as $sticky_post ) {
                    array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
                    ++$sticky_offset;
                }
            }
        }

        if ( ! $q['suppress_filters'] ) {
            /**
             * Filters the array of retrieved posts after they've been fetched and
             * internally processed.
             *
             * @since 1.5.0
             *
             * @param WP_Post[] $posts Array of post objects.
             * @param WP_Query  $query The WP_Query instance (passed by reference).
             */
            $this->posts = apply_filters_ref_array( 'the_posts', array( $this->posts, &$this ) );
        }

        /*
         * Ensure that any posts added/modified via one of the filters above are
         * of the type WP_Post and are filtered.
         */
        if ( $this->posts ) {
            $this->post_count = count( $this->posts );

            /** @var WP_Post[] */
            $this->posts = array_map( 'get_post', $this->posts );

            if ( $q['cache_results'] ) {
                if ( $is_unfiltered_query && $unfiltered_posts === $this->posts ) {
                    update_post_caches( $this->posts, $post_type, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
                } else {
                    $post_ids = wp_list_pluck( $this->posts, 'ID' );
                    _prime_post_caches( $post_ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
                }
            }

            /** @var WP_Post */
            $this->post = reset( $this->posts );
        } else {
            $this->post_count = 0;
            $this->posts      = array();
        }

        if ( ! empty( $this->posts ) && $q['update_menu_item_cache'] ) {
            update_menu_item_cache( $this->posts );
        }

        if ( $q['lazy_load_term_meta'] ) {
            wp_queue_posts_for_term_meta_lazyload( $this->posts );
        }

        return $this->posts;
    }

    /**
     * Sets up the amount of found posts and the number of pages (if limit clause was used)
     * for the current query.
     *
     * @since 3.5.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param array  $q      Query variables.
     * @param string $limits LIMIT clauses of the query.
     */
    private function set_found_posts( $q, $limits ) {
        global $wpdb;

        /*
         * Bail if posts is an empty array. Continue if posts is an empty string,
         * null, or false to accommodate caching plugins that fill posts later.
         */
        if ( $q['no_found_rows'] || ( is_array( $this->posts ) && ! $this->posts ) ) {
            return;
        }

        if ( ! empty( $limits ) ) {
            /**
             * Filters the query to run for retrieving the found posts.
             *
             * @since 2.1.0
             *
             * @param string   $found_posts_query The query to run to find the found posts.
             * @param WP_Query $query             The WP_Query instance (passed by reference).
             */
            $found_posts_query = apply_filters_ref_array( 'found_posts_query', array( 'SELECT FOUND_ROWS()', &$this ) );

            $this->found_posts = (int) $wpdb->get_var( $found_posts_query );
        } else {
            if ( is_array( $this->posts ) ) {
                $this->found_posts = count( $this->posts );
            } else {
                if ( null === $this->posts ) {
                    $this->found_posts = 0;
                } else {
                    $this->found_posts = 1;
                }
            }
        }

        /**
         * Filters the number of found posts for the query.
         *
         * @since 2.1.0
         *
         * @param int      $found_posts The number of posts found.
         * @param WP_Query $query       The WP_Query instance (passed by reference).
         */
        $this->found_posts = (int) apply_filters_ref_array( 'found_posts', array( $this->found_posts, &$this ) );

        if ( ! empty( $limits ) ) {
            $this->max_num_pages = (int) ceil( $this->found_posts / $q['posts_per_page'] );
        }
    }

    /**
     * Sets up the next post and iterate current post index.
     *
     * @since 1.5.0
     *
     * @return WP_Post Next post.
     */
    public function next_post() {

        ++$this->current_post;

        /** @var WP_Post */
        $this->post = $this->posts[ $this->current_post ];
        return $this->post;
    }

    /**
     * Sets up the current post.
     *
     * Retrieves the next post, sets up the post, sets the 'in the loop'
     * property to true.
     *
     * @since 1.5.0
     *
     * @global WP_Post $post Global post object.
     */
    public function the_post() {
        global $post;

        if ( ! $this->in_the_loop ) {
            // Only prime the post cache for queries limited to the ID field.
            $post_ids = array_filter( $this->posts, 'is_numeric' );
            // Exclude any falsey values, such as 0.
            $post_ids = array_filter( $post_ids );
            if ( $post_ids ) {
                _prime_post_caches( $post_ids, $this->query_vars['update_post_term_cache'], $this->query_vars['update_post_meta_cache'] );
            }
            $post_objects = array_map( 'get_post', $this->posts );
            update_post_author_caches( $post_objects );
        }

        $this->in_the_loop = true;
        $this->before_loop = false;

        if ( -1 == $this->current_post ) { // Loop has just started.
            /**
             * Fires once the loop is started.
             *
             * @since 2.0.0
             *
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            do_action_ref_array( 'loop_start', array( &$this ) );
        }

        $post = $this->next_post();
        $this->setup_postdata( $post );
    }

    /**
     * Determines whether there are more posts available in the loop.
     *
     * Calls the {@see 'loop_end'} action when the loop is complete.
     *
     * @since 1.5.0
     *
     * @return bool True if posts are available, false if end of the loop.
     */
    public function have_posts() {
        if ( $this->current_post + 1 < $this->post_count ) {
            return true;
        } elseif ( $this->current_post + 1 == $this->post_count && $this->post_count > 0 ) {
            /**
             * Fires once the loop has ended.
             *
             * @since 2.0.0
             *
             * @param WP_Query $query The WP_Query instance (passed by reference).
             */
            do_action_ref_array( 'loop_end', array( &$this ) );
            // Do some cleaning up after the loop.
            $this->rewind_posts();
        } elseif ( 0 === $this->post_count ) {
            $this->before_loop = false;

            /**
             * Fires if no results are found in a post query.
             *
             * @since 4.9.0
             *
             * @param WP_Query $query The WP_Query instance.
             */
            do_action( 'loop_no_results', $this );
        }

        $this->in_the_loop = false;
        return false;
    }

    /**
     * Rewinds the posts and resets post index.
     *
     * @since 1.5.0
     */
    public function rewind_posts() {
        $this->current_post = -1;
        if ( $this->post_count > 0 ) {
            $this->post = $this->posts[0];
        }
    }

    /**
     * Iterates current comment index and returns WP_Comment object.
     *
     * @since 2.2.0
     *
     * @return WP_Comment Comment object.
     */
    public function next_comment() {
        ++$this->current_comment;

        /** @var WP_Comment */
        $this->comment = $this->comments[ $this->current_comment ];
        return $this->comment;
    }

    /**
     * Sets up the current comment.
     *
     * @since 2.2.0
     *
     * @global WP_Comment $comment Global comment object.
     */
    public function the_comment() {
        global $comment;

        $comment = $this->next_comment();

        if ( 0 == $this->current_comment ) {
            /**
             * Fires once the comment loop is started.
             *
             * @since 2.2.0
             */
            do_action( 'comment_loop_start' );
        }
    }

    /**
     * Determines whether there are more comments available.
     *
     * Automatically rewinds comments when finished.
     *
     * @since 2.2.0
     *
     * @return bool True if comments are available, false if no more comments.
     */
    public function have_comments() {
        if ( $this->current_comment + 1 < $this->comment_count ) {
            return true;
        } elseif ( $this->current_comment + 1 == $this->comment_count ) {
            $this->rewind_comments();
        }

        return false;
    }

    /**
     * Rewinds the comments, resets the comment index and comment to first.
     *
     * @since 2.2.0
     */
    public function rewind_comments() {
        $this->current_comment = -1;
        if ( $this->comment_count > 0 ) {
            $this->comment = $this->comments[0];
        }
    }

    /**
     * Sets up the WordPress query by parsing query string.
     *
     * @since 1.5.0
     *
     * @see WP_Query::parse_query() for all available arguments.
     *
     * @param string|array $query URL query string or array of query arguments.
     * @return WP_Post[]|int[] Array of post objects or post IDs.
     */
    public function query( $query ) {
        $this->init();
        $this->query      = wp_parse_args( $query );
        $this->query_vars = $this->query;
        return $this->get_posts();
    }

    /**
     * Retrieves the currently queried object.
     *
     * If queried object is not set, then the queried object will be set from
     * the category, tag, taxonomy, posts page, single post, page, or author
     * query variable. After it is set up, it will be returned.
     *
     * @since 1.5.0
     *
     * @return WP_Term|WP_Post_Type|WP_Post|WP_User|null The queried object.
     */
    public function get_queried_object() {
        if ( isset( $this->queried_object ) ) {
            return $this->queried_object;
        }

        $this->queried_object    = null;
        $this->queried_object_id = null;

        if ( $this->is_category || $this->is_tag || $this->is_tax ) {
            if ( $this->is_category ) {
                $cat           = $this->get( 'cat' );
                $category_name = $this->get( 'category_name' );

                if ( $cat ) {
                    $term = get_term( $cat, 'category' );
                } elseif ( $category_name ) {
                    $term = get_term_by( 'slug', $category_name, 'category' );
                }
            } elseif ( $this->is_tag ) {
                $tag_id = $this->get( 'tag_id' );
                $tag    = $this->get( 'tag' );

                if ( $tag_id ) {
                    $term = get_term( $tag_id, 'post_tag' );
                } elseif ( $tag ) {
                    $term = get_term_by( 'slug', $tag, 'post_tag' );
                }
            } else {
                // For other tax queries, grab the first term from the first clause.
                if ( ! empty( $this->tax_query->queried_terms ) ) {
                    $queried_taxonomies = array_keys( $this->tax_query->queried_terms );
                    $matched_taxonomy   = reset( $queried_taxonomies );
                    $query              = $this->tax_query->queried_terms[ $matched_taxonomy ];

                    if ( ! empty( $query['terms'] ) ) {
                        if ( 'term_id' === $query['field'] ) {
                            $term = get_term( reset( $query['terms'] ), $matched_taxonomy );
                        } else {
                            $term = get_term_by( $query['field'], reset( $query['terms'] ), $matched_taxonomy );
                        }
                    }
                }
            }

            if ( ! empty( $term ) && ! is_wp_error( $term ) ) {
                $this->queried_object    = $term;
                $this->queried_object_id = (int) $term->term_id;

                if ( $this->is_category && 'category' === $this->queried_object->taxonomy ) {
                    _make_cat_compat( $this->queried_object );
                }
            }
        } elseif ( $this->is_post_type_archive ) {
            $post_type = $this->get( 'post_type' );

            if ( is_array( $post_type ) ) {
                $post_type = reset( $post_type );
            }

            $this->queried_object = get_post_type_object( $post_type );
        } elseif ( $this->is_posts_page ) {
            $page_for_posts = get_option( 'page_for_posts' );

            $this->queried_object    = get_post( $page_for_posts );
            $this->queried_object_id = (int) $this->queried_object->ID;
        } elseif ( $this->is_singular && ! empty( $this->post ) ) {
            $this->queried_object    = $this->post;
            $this->queried_object_id = (int) $this->post->ID;
        } elseif ( $this->is_author ) {
            $author      = (int) $this->get( 'author' );
            $author_name = $this->get( 'author_name' );

            if ( $author ) {
                $this->queried_object_id = $author;
            } elseif ( $author_name ) {
                $user = get_user_by( 'slug', $author_name );

                if ( $user ) {
                    $this->queried_object_id = $user->ID;
                }
            }

            $this->queried_object = get_userdata( $this->queried_object_id );
        }

        return $this->queried_object;
    }

    /**
     * Retrieves the ID of the currently queried object.
     *
     * @since 1.5.0
     *
     * @return int
     */
    public function get_queried_object_id() {
        $this->get_queried_object();

        if ( isset( $this->queried_object_id ) ) {
            return $this->queried_object_id;
        }

        return 0;
    }

    /**
     * Constructor.
     *
     * Sets up the WordPress query, if parameter is not empty.
     *
     * @since 1.5.0
     *
     * @see WP_Query::parse_query() for all available arguments.
     *
     * @param string|array $query URL query string or array of vars.
     */
    public function __construct( $query = '' ) {
        if ( ! empty( $query ) ) {
            $this->query( $query );
        }
    }

    /**
     * Makes private properties readable for backward compatibility.
     *
     * @since 4.0.0
     *
     * @param string $name Property to get.
     * @return mixed Property.
     */
    public function __get( $name ) {
        if ( in_array( $name, $this->compat_fields, true ) ) {
            return $this->$name;
        }
    }

    /**
     * Makes private properties checkable for backward compatibility.
     *
     * @since 4.0.0
     *
     * @param string $name Property to check if set.
     * @return bool Whether the property is set.
     */
    public function __isset( $name ) {
        if ( in_array( $name, $this->compat_fields, true ) ) {
            return isset( $this->$name );
        }
    }

    /**
     * Makes private/protected methods readable for backward compatibility.
     *
     * @since 4.0.0
     *
     * @param string $name      Method to call.
     * @param array  $arguments Arguments to pass when calling.
     * @return mixed|false Return value of the callback, false otherwise.
     */
    public function __call( $name, $arguments ) {
        if ( in_array( $name, $this->compat_methods, true ) ) {
            return $this->$name( ...$arguments );
        }
        return false;
    }

    /**
     * Determines whether the query is for an existing archive page.
     *
     * Archive pages include category, tag, author, date, custom post type,
     * and custom taxonomy based archives.
     *
     * @since 3.1.0
     *
     * @see WP_Query::is_category()
     * @see WP_Query::is_tag()
     * @see WP_Query::is_author()
     * @see WP_Query::is_date()
     * @see WP_Query::is_post_type_archive()
     * @see WP_Query::is_tax()
     *
     * @return bool Whether the query is for an existing archive page.
     */
    public function is_archive() {
        return (bool) $this->is_archive;
    }

    /**
     * Determines whether the query is for an existing post type archive page.
     *
     * @since 3.1.0
     *
     * @param string|string[] $post_types Optional. Post type or array of posts types
     *                                    to check against. Default empty.
     * @return bool Whether the query is for an existing post type archive page.
     */
    public function is_post_type_archive( $post_types = '' ) {
        if ( empty( $post_types ) || ! $this->is_post_type_archive ) {
            return (bool) $this->is_post_type_archive;
        }

        $post_type = $this->get( 'post_type' );
        if ( is_array( $post_type ) ) {
            $post_type = reset( $post_type );
        }
        $post_type_object = get_post_type_object( $post_type );

        if ( ! $post_type_object ) {
            return false;
        }

        return in_array( $post_type_object->name, (array) $post_types, true );
    }

    /**
     * Determines whether the query is for an existing attachment page.
     *
     * @since 3.1.0
     *
     * @param int|string|int[]|string[] $attachment Optional. Attachment ID, title, slug, or array of such
     *                                              to check against. Default empty.
     * @return bool Whether the query is for an existing attachment page.
     */
    public function is_attachment( $attachment = '' ) {
        if ( ! $this->is_attachment ) {
            return false;
        }

        if ( empty( $attachment ) ) {
            return true;
        }

        $attachment = array_map( 'strval', (array) $attachment );

        $post_obj = $this->get_queried_object();
        if ( ! $post_obj ) {
            return false;
        }

        if ( in_array( (string) $post_obj->ID, $attachment, true ) ) {
            return true;
        } elseif ( in_array( $post_obj->post_title, $attachment, true ) ) {
            return true;
        } elseif ( in_array( $post_obj->post_name, $attachment, true ) ) {
            return true;
        }
        return false;
    }

    /**
     * Determines whether the query is for an existing author archive page.
     *
     * If the $author parameter is specified, this function will additionally
     * check if the query is for one of the authors specified.
     *
     * @since 3.1.0
     *
     * @param int|string|int[]|string[] $author Optional. User ID, nickname, nicename, or array of such
     *                                          to check against. Default empty.
     * @return bool Whether the query is for an existing author archive page.
     */
    public function is_author( $author = '' ) {
        if ( ! $this->is_author ) {
            return false;
        }

        if ( empty( $author ) ) {
            return true;
        }

        $author_obj = $this->get_queried_object();
        if ( ! $author_obj ) {
            return false;
        }

        $author = array_map( 'strval', (array) $author );

        if ( in_array( (string) $author_obj->ID, $author, true ) ) {
            return true;
        } elseif ( in_array( $author_obj->nickname, $author, true ) ) {
            return true;
        } elseif ( in_array( $author_obj->user_nicename, $author, true ) ) {
            return true;
        }

        return false;
    }

    /**
     * Determines whether the query is for an existing category archive page.
     *
     * If the $category parameter is specified, this function will additionally
     * check if the query is for one of the categories specified.
     *
     * @since 3.1.0
     *
     * @param int|string|int[]|string[] $category Optional. Category ID, name, slug, or array of such
     *                                            to check against. Default empty.
     * @return bool Whether the query is for an existing category archive page.
     */
    public function is_category( $category = '' ) {
        if ( ! $this->is_category ) {
            return false;
        }

        if ( empty( $category ) ) {
            return true;
        }

        $cat_obj = $this->get_queried_object();
        if ( ! $cat_obj ) {
            return false;
        }

        $category = array_map( 'strval', (array) $category );

        if ( in_array( (string) $cat_obj->term_id, $category, true ) ) {
            return true;
        } elseif ( in_array( $cat_obj->name, $category, true ) ) {
            return true;
        } elseif ( in_array( $cat_obj->slug, $category, true ) ) {
            return true;
        }

        return false;
    }

    /**
     * Determines whether the query is for an existing tag archive page.
     *
     * If the $tag parameter is specified, this function will additionally
     * check if the query is for one of the tags specified.
     *
     * @since 3.1.0
     *
     * @param int|string|int[]|string[] $tag Optional. Tag ID, name, slug, or array of such
     *                                       to check against. Default empty.
     * @return bool Whether the query is for an existing tag archive page.
     */
    public function is_tag( $tag = '' ) {
        if ( ! $this->is_tag ) {
            return false;
        }

        if ( empty( $tag ) ) {
            return true;
        }

        $tag_obj = $this->get_queried_object();
        if ( ! $tag_obj ) {
            return false;
        }

        $tag = array_map( 'strval', (array) $tag );

        if ( in_array( (string) $tag_obj->term_id, $tag, true ) ) {
            return true;
        } elseif ( in_array( $tag_obj->name, $tag, true ) ) {
            return true;
        } elseif ( in_array( $tag_obj->slug, $tag, true ) ) {
            return true;
        }

        return false;
    }

    /**
     * Determines whether the query is for an existing custom taxonomy archive page.
     *
     * If the $taxonomy parameter is specified, this function will additionally
     * check if the query is for that specific $taxonomy.
     *
     * If the $term parameter is specified in addition to the $taxonomy parameter,
     * this function will additionally check if the query is for one of the terms
     * specified.
     *
     * @since 3.1.0
     *
     * @global WP_Taxonomy[] $wp_taxonomies Registered taxonomies.
     *
     * @param string|string[]           $taxonomy Optional. Taxonomy slug or slugs to check against.
     *                                            Default empty.
     * @param int|string|int[]|string[] $term     Optional. Term ID, name, slug, or array of such
     *                                            to check against. Default empty.
     * @return bool Whether the query is for an existing custom taxonomy archive page.
     *              True for custom taxonomy archive pages, false for built-in taxonomies
     *              (category and tag archives).
     */
    public function is_tax( $taxonomy = '', $term = '' ) {
        global $wp_taxonomies;

        if ( ! $this->is_tax ) {
            return false;
        }

        if ( empty( $taxonomy ) ) {
            return true;
        }

        $queried_object = $this->get_queried_object();
        $tax_array      = array_intersect( array_keys( $wp_taxonomies ), (array) $taxonomy );
        $term_array     = (array) $term;

        // Check that the taxonomy matches.
        if ( ! ( isset( $queried_object->taxonomy ) && count( $tax_array ) && in_array( $queried_object->taxonomy, $tax_array, true ) ) ) {
            return false;
        }

        // Only a taxonomy provided.
        if ( empty( $term ) ) {
            return true;
        }

        return isset( $queried_object->term_id ) &&
            count(
                array_intersect(
                    array( $queried_object->term_id, $queried_object->name, $queried_object->slug ),
                    $term_array
                )
            );
    }

    /**
     * Determines whether the current URL is within the comments popup window.
     *
     * @since 3.1.0
     * @deprecated 4.5.0
     *
     * @return false Always returns false.
     */
    public function is_comments_popup() {
        _deprecated_function( __FUNCTION__, '4.5.0' );

        return false;
    }

    /**
     * Determines whether the query is for an existing date archive.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for an existing date archive.
     */
    public function is_date() {
        return (bool) $this->is_date;
    }

    /**
     * Determines whether the query is for an existing day archive.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for an existing day archive.
     */
    public function is_day() {
        return (bool) $this->is_day;
    }

    /**
     * Determines whether the query is for a feed.
     *
     * @since 3.1.0
     *
     * @param string|string[] $feeds Optional. Feed type or array of feed types
     *                                         to check against. Default empty.
     * @return bool Whether the query is for a feed.
     */
    public function is_feed( $feeds = '' ) {
        if ( empty( $feeds ) || ! $this->is_feed ) {
            return (bool) $this->is_feed;
        }

        $qv = $this->get( 'feed' );
        if ( 'feed' === $qv ) {
            $qv = get_default_feed();
        }

        return in_array( $qv, (array) $feeds, true );
    }

    /**
     * Determines whether the query is for a comments feed.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a comments feed.
     */
    public function is_comment_feed() {
        return (bool) $this->is_comment_feed;
    }

    /**
     * Determines whether the query is for the front page of the site.
     *
     * This is for what is displayed at your site's main URL.
     *
     * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
     *
     * If you set a static page for the front page of your site, this function will return
     * true when viewing that page.
     *
     * Otherwise the same as {@see WP_Query::is_home()}.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for the front page of the site.
     */
    public function is_front_page() {
        // Most likely case.
        if ( 'posts' === get_option( 'show_on_front' ) && $this->is_home() ) {
            return true;
        } elseif ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_on_front' )
            && $this->is_page( get_option( 'page_on_front' ) )
        ) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Determines whether the query is for the blog homepage.
     *
     * This is the page which shows the time based blog content of your site.
     *
     * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_for_posts'.
     *
     * If you set a static page for the front page of your site, this function will return
     * true only on the page you set as the "Posts page".
     *
     * @since 3.1.0
     *
     * @see WP_Query::is_front_page()
     *
     * @return bool Whether the query is for the blog homepage.
     */
    public function is_home() {
        return (bool) $this->is_home;
    }

    /**
     * Determines whether the query is for the Privacy Policy page.
     *
     * This is the page which shows the Privacy Policy content of your site.
     *
     * Depends on the site's "Change your Privacy Policy page" Privacy Settings 'wp_page_for_privacy_policy'.
     *
     * This function will return true only on the page you set as the "Privacy Policy page".
     *
     * @since 5.2.0
     *
     * @return bool Whether the query is for the Privacy Policy page.
     */
    public function is_privacy_policy() {
        if ( get_option( 'wp_page_for_privacy_policy' )
            && $this->is_page( get_option( 'wp_page_for_privacy_policy' ) )
        ) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Determines whether the query is for an existing month archive.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for an existing month archive.
     */
    public function is_month() {
        return (bool) $this->is_month;
    }

    /**
     * Determines whether the query is for an existing single page.
     *
     * If the $page parameter is specified, this function will additionally
     * check if the query is for one of the pages specified.
     *
     * @since 3.1.0
     *
     * @see WP_Query::is_single()
     * @see WP_Query::is_singular()
     *
     * @param int|string|int[]|string[] $page Optional. Page ID, title, slug, path, or array of such
     *                                        to check against. Default empty.
     * @return bool Whether the query is for an existing single page.
     */
    public function is_page( $page = '' ) {
        if ( ! $this->is_page ) {
            return false;
        }

        if ( empty( $page ) ) {
            return true;
        }

        $page_obj = $this->get_queried_object();
        if ( ! $page_obj ) {
            return false;
        }

        $page = array_map( 'strval', (array) $page );

        if ( in_array( (string) $page_obj->ID, $page, true ) ) {
            return true;
        } elseif ( in_array( $page_obj->post_title, $page, true ) ) {
            return true;
        } elseif ( in_array( $page_obj->post_name, $page, true ) ) {
            return true;
        } else {
            foreach ( $page as $pagepath ) {
                if ( ! strpos( $pagepath, '/' ) ) {
                    continue;
                }
                $pagepath_obj = get_page_by_path( $pagepath );

                if ( $pagepath_obj && ( $pagepath_obj->ID == $page_obj->ID ) ) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * Determines whether the query is for a paged result and not for the first page.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a paged result.
     */
    public function is_paged() {
        return (bool) $this->is_paged;
    }

    /**
     * Determines whether the query is for a post or page preview.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a post or page preview.
     */
    public function is_preview() {
        return (bool) $this->is_preview;
    }

    /**
     * Determines whether the query is for the robots.txt file.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for the robots.txt file.
     */
    public function is_robots() {
        return (bool) $this->is_robots;
    }

    /**
     * Determines whether the query is for the favicon.ico file.
     *
     * @since 5.4.0
     *
     * @return bool Whether the query is for the favicon.ico file.
     */
    public function is_favicon() {
        return (bool) $this->is_favicon;
    }

    /**
     * Determines whether the query is for a search.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a search.
     */
    public function is_search() {
        return (bool) $this->is_search;
    }

    /**
     * Determines whether the query is for an existing single post.
     *
     * Works for any post type excluding pages.
     *
     * If the $post parameter is specified, this function will additionally
     * check if the query is for one of the Posts specified.
     *
     * @since 3.1.0
     *
     * @see WP_Query::is_page()
     * @see WP_Query::is_singular()
     *
     * @param int|string|int[]|string[] $post Optional. Post ID, title, slug, path, or array of such
     *                                        to check against. Default empty.
     * @return bool Whether the query is for an existing single post.
     */
    public function is_single( $post = '' ) {
        if ( ! $this->is_single ) {
            return false;
        }

        if ( empty( $post ) ) {
            return true;
        }

        $post_obj = $this->get_queried_object();
        if ( ! $post_obj ) {
            return false;
        }

        $post = array_map( 'strval', (array) $post );

        if ( in_array( (string) $post_obj->ID, $post, true ) ) {
            return true;
        } elseif ( in_array( $post_obj->post_title, $post, true ) ) {
            return true;
        } elseif ( in_array( $post_obj->post_name, $post, true ) ) {
            return true;
        } else {
            foreach ( $post as $postpath ) {
                if ( ! strpos( $postpath, '/' ) ) {
                    continue;
                }
                $postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

                if ( $postpath_obj && ( $postpath_obj->ID == $post_obj->ID ) ) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * Determines whether the query is for an existing single post of any post type
     * (post, attachment, page, custom post types).
     *
     * If the $post_types parameter is specified, this function will additionally
     * check if the query is for one of the Posts Types specified.
     *
     * @since 3.1.0
     *
     * @see WP_Query::is_page()
     * @see WP_Query::is_single()
     *
     * @param string|string[] $post_types Optional. Post type or array of post types
     *                                    to check against. Default empty.
     * @return bool Whether the query is for an existing single post
     *              or any of the given post types.
     */
    public function is_singular( $post_types = '' ) {
        if ( empty( $post_types ) || ! $this->is_singular ) {
            return (bool) $this->is_singular;
        }

        $post_obj = $this->get_queried_object();
        if ( ! $post_obj ) {
            return false;
        }

        return in_array( $post_obj->post_type, (array) $post_types, true );
    }

    /**
     * Determines whether the query is for a specific time.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a specific time.
     */
    public function is_time() {
        return (bool) $this->is_time;
    }

    /**
     * Determines whether the query is for a trackback endpoint call.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for a trackback endpoint call.
     */
    public function is_trackback() {
        return (bool) $this->is_trackback;
    }

    /**
     * Determines whether the query is for an existing year archive.
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is for an existing year archive.
     */
    public function is_year() {
        return (bool) $this->is_year;
    }

    /**
     * Determines whether the query is a 404 (returns no results).
     *
     * @since 3.1.0
     *
     * @return bool Whether the query is a 404 error.
     */
    public function is_404() {
        return (bool) $this->is_404;
    }

    /**
     * Determines whether the query is for an embedded post.
     *
     * @since 4.4.0
     *
     * @return bool Whether the query is for an embedded post.
     */
    public function is_embed() {
        return (bool) $this->is_embed;
    }

    /**
     * Determines whether the query is the main query.
     *
     * @since 3.3.0
     *
     * @global WP_Query $wp_the_query WordPress Query object.
     *
     * @return bool Whether the query is the main query.
     */
    public function is_main_query() {
        global $wp_the_query;
        return $wp_the_query === $this;
    }

    /**
     * Sets up global post data.
     *
     * @since 4.1.0
     * @since 4.4.0 Added the ability to pass a post ID to `$post`.
     *
     * @global int     $id
     * @global WP_User $authordata
     * @global string  $currentday
     * @global string  $currentmonth
     * @global int     $page
     * @global array   $pages
     * @global int     $multipage
     * @global int     $more
     * @global int     $numpages
     *
     * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
     * @return true True when finished.
     */
    public function setup_postdata( $post ) {
        global $id, $authordata, $currentday, $currentmonth, $page, $pages, $multipage, $more, $numpages;

        if ( ! ( $post instanceof WP_Post ) ) {
            $post = get_post( $post );
        }

        if ( ! $post ) {
            return;
        }

        $elements = $this->generate_postdata( $post );
        if ( false === $elements ) {
            return;
        }

        $id           = $elements['id'];
        $authordata   = $elements['authordata'];
        $currentday   = $elements['currentday'];
        $currentmonth = $elements['currentmonth'];
        $page         = $elements['page'];
        $pages        = $elements['pages'];
        $multipage    = $elements['multipage'];
        $more         = $elements['more'];
        $numpages     = $elements['numpages'];

        /**
         * Fires once the post data has been set up.
         *
         * @since 2.8.0
         * @since 4.1.0 Introduced `$query` parameter.
         *
         * @param WP_Post  $post  The Post object (passed by reference).
         * @param WP_Query $query The current Query object (passed by reference).
         */
        do_action_ref_array( 'the_post', array( &$post, &$this ) );

        return true;
    }

    /**
     * Generates post data.
     *
     * @since 5.2.0
     *
     * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
     * @return array|false Elements of post or false on failure.
     */
    public function generate_postdata( $post ) {

        if ( ! ( $post instanceof WP_Post ) ) {
            $post = get_post( $post );
        }

        if ( ! $post ) {
            return false;
        }

        $id = (int) $post->ID;

        $authordata = get_userdata( $post->post_author );

        $currentday   = false;
        $currentmonth = false;

        $post_date = $post->post_date;
        if ( ! empty( $post_date ) && '0000-00-00 00:00:00' !== $post_date ) {
            // Avoid using mysql2date for performance reasons.
            $currentmonth = substr( $post_date, 5, 2 );
            $day          = substr( $post_date, 8, 2 );
            $year         = substr( $post_date, 2, 2 );

            $currentday = sprintf( '%s.%s.%s', $day, $currentmonth, $year );
        }

        $numpages  = 1;
        $multipage = 0;
        $page      = $this->get( 'page' );
        if ( ! $page ) {
            $page = 1;
        }

        /*
         * Force full post content when viewing the permalink for the $post,
         * or when on an RSS feed. Otherwise respect the 'more' tag.
         */
        if ( get_queried_object_id() === $post->ID && ( $this->is_page() || $this->is_single() ) ) {
            $more = 1;
        } elseif ( $this->is_feed() ) {
            $more = 1;
        } else {
            $more = 0;
        }

        $content = $post->post_content;
        if ( str_contains( $content, '<!--nextpage-->' ) ) {
            $content = str_replace( "\n<!--nextpage-->\n", '<!--nextpage-->', $content );
            $content = str_replace( "\n<!--nextpage-->", '<!--nextpage-->', $content );
            $content = str_replace( "<!--nextpage-->\n", '<!--nextpage-->', $content );

            // Remove the nextpage block delimiters, to avoid invalid block structures in the split content.
            $content = str_replace( '<!-- wp:nextpage -->', '', $content );
            $content = str_replace( '<!-- /wp:nextpage -->', '', $content );

            // Ignore nextpage at the beginning of the content.
            if ( str_starts_with( $content, '<!--nextpage-->' ) ) {
                $content = substr( $content, 15 );
            }

            $pages = explode( '<!--nextpage-->', $content );
        } else {
            $pages = array( $post->post_content );
        }

        /**
         * Filters the "pages" derived from splitting the post content.
         *
         * "Pages" are determined by splitting the post content based on the presence
         * of `<!-- nextpage -->` tags.
         *
         * @since 4.4.0
         *
         * @param string[] $pages Array of "pages" from the post content split by `<!-- nextpage -->` tags.
         * @param WP_Post  $post  Current post object.
         */
        $pages = apply_filters( 'content_pagination', $pages, $post );

        $numpages = count( $pages );

        if ( $numpages > 1 ) {
            if ( $page > 1 ) {
                $more = 1;
            }
            $multipage = 1;
        } else {
            $multipage = 0;
        }

        $elements = compact( 'id', 'authordata', 'currentday', 'currentmonth', 'page', 'pages', 'multipage', 'more', 'numpages' );

        return $elements;
    }

    /**
     * Generates cache key.
     *
     * @since 6.1.0
     *
     * @global wpdb $wpdb WordPress database abstraction object.
     *
     * @param array  $args Query arguments.
     * @param string $sql  SQL statement.
     * @return string Cache key.
     */
    protected function generate_cache_key( array $args, $sql ) {
        global $wpdb;

        unset(
            $args['cache_results'],
            $args['fields'],
            $args['lazy_load_term_meta'],
            $args['update_post_meta_cache'],
            $args['update_post_term_cache'],
            $args['update_menu_item_cache'],
            $args['suppress_filters']
        );

        $placeholder = $wpdb->placeholder_escape();
        array_walk_recursive(
            $args,
            /*
             * Replace wpdb placeholders with the string used in the database
             * query to avoid unreachable cache keys. This is necessary because
             * the placeholder is randomly generated in each request.
             *
             * $value is passed by reference to allow it to be modified.
             * array_walk_recursive() does not return an array.
             */
            static function ( &$value ) use ( $wpdb, $placeholder ) {
                if ( is_string( $value ) && str_contains( $value, $placeholder ) ) {
                    $value = $wpdb->remove_placeholder_escape( $value );
                }
            }
        );

        // Replace wpdb placeholder in the SQL statement used by the cache key.
        $sql = $wpdb->remove_placeholder_escape( $sql );
        $key = md5( serialize( $args ) . $sql );

        $last_changed = wp_cache_get_last_changed( 'posts' );
        if ( ! empty( $this->tax_query->queries ) ) {
            $last_changed .= wp_cache_get_last_changed( 'terms' );
        }

        return "wp_query:$key:$last_changed";
    }

    /**
     * After looping through a nested query, this function
     * restores the $post global to the current post in this query.
     *
     * @since 3.7.0
     *
     * @global WP_Post $post Global post object.
     */
    public function reset_postdata() {
        if ( ! empty( $this->post ) ) {
            $GLOBALS['post'] = $this->post;
            $this->setup_postdata( $this->post );
        }
    }

    /**
     * Lazyloads term meta for posts in the loop.
     *
     * @since 4.4.0
     * @deprecated 4.5.0 See wp_queue_posts_for_term_meta_lazyload().
     *
     * @param mixed $check
     * @param int   $term_id
     * @return mixed
     */
    public function lazyload_term_meta( $check, $term_id ) {
        _deprecated_function( __METHOD__, '4.5.0' );
        return $check;
    }

    /**
     * Lazyloads comment meta for comments in the loop.
     *
     * @since 4.4.0
     * @deprecated 4.5.0 See wp_lazyload_comment_meta().
     *
     * @param mixed $check
     * @param int   $comment_id
     * @return mixed
     */
    public function lazyload_comment_meta( $check, $comment_id ) {
        _deprecated_function( __METHOD__, '4.5.0' );
        return $check;
    }
}