CaffGeek/MBACNationals

<?php
/**
 * Multisite upgrade administration panel.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

/** Load WordPress Administration Bootstrap */
require_once( dirname( __FILE__ ) . '/admin.php' );

if ( ! is_multisite() )
    wp_die( __( 'Multisite support is not enabled.' ) );

require_once( ABSPATH . WPINC . '/http.php' );

$title = __( 'Upgrade Network' );
$parent_file = 'upgrade.php';

get_current_screen()->add_help_tab( array(
    'id'      => 'overview',
    'title'   => __('Overview'),
    'content' =>
        '<p>' . __('Only use this screen once you have updated to a new version of WordPress through Updates/Available Updates (via the Network Administration navigation menu or the Toolbar). Clicking the Upgrade Network button will step through each site in the network, five at a time, and make sure any database updates are applied.') . '</p>' .
        '<p>' . __('If a version update to core has not happened, clicking this button won&#8217;t affect anything.') . '</p>' .
        '<p>' . __('If this process fails for any reason, users logging in to their sites will force the same update.') . '</p>'
) );

get_current_screen()->set_help_sidebar(
    '<p><strong>' . __('For more information:') . '</strong></p>' .
    '<p>' . __('<a href="http://codex.wordpress.org/Network_Admin_Updates_Screen" target="_blank">Documentation on Upgrade Network</a>') . '</p>' .
    '<p>' . __('<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
);

require_once( ABSPATH . 'wp-admin/admin-header.php' );

if ( ! current_user_can( 'manage_network' ) )
    wp_die( __( 'You do not have permission to access this page.' ) );

echo '<div class="wrap">';
echo '<h2>' . __( 'Upgrade Network' ) . '</h2>';

$action = isset($_GET['action']) ? $_GET['action'] : 'show';

switch ( $action ) {
    case "upgrade":
        $n = ( isset($_GET['n']) ) ? intval($_GET['n']) : 0;

        if ( $n < 5 ) {
            global $wp_db_version;
            update_site_option( 'wpmu_upgrade_site', $wp_db_version );
        }

        $blogs = $wpdb->get_results( "SELECT * FROM {$wpdb->blogs} WHERE site_id = '{$wpdb->siteid}' AND spam = '0' AND deleted = '0' AND archived = '0' ORDER BY registered DESC LIMIT {$n}, 5", ARRAY_A );
        if ( empty( $blogs ) ) {
            echo '<p>' . __( 'All done!' ) . '</p>';
            break;
        }
        echo "<ul>";
        foreach ( (array) $blogs as $details ) {
            switch_to_blog( $details['blog_id'] );
            $siteurl = site_url();
            $upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
            restore_current_blog();
            echo "<li>$siteurl</li>";
            $response = wp_remote_get( $upgrade_url, array( 'timeout' => 120, 'httpversion' => '1.1' ) );
            if ( is_wp_error( $response ) )
                wp_die( sprintf( __( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: <em>%2$s</em>' ), $siteurl, $response->get_error_message() ) );
            /**
             * Fires after the Multisite DB upgrade for each site is complete.
             *
             * @since MU
             *
             * @param array|WP_Error $response The upgrade response array or WP_Error on failure.
             */
            do_action( 'after_mu_upgrade', $response );
            /**
             * Fires after each site has been upgraded.
             *
             * @since MU
             *
             * @param int $blog_id The id of the blog.
             */
            do_action( 'wpmu_upgrade_site', $details[ 'blog_id' ] );
        }
        echo "</ul>";
        ?><p><?php _e( 'If your browser doesn&#8217;t start loading the next page automatically, click this link:' ); ?> <a class="button" href="upgrade.php?action=upgrade&amp;n=<?php echo ($n + 5) ?>"><?php _e("Next Sites"); ?></a></p>
        <script type='text/javascript'>
        <!--
        function nextpage() {
            location.href = "upgrade.php?action=upgrade&n=<?php echo ($n + 5) ?>";
        }
        setTimeout( "nextpage()", 250 );
        //-->
        </script><?php
    break;
    case 'show':
    default:
        if ( get_site_option( 'wpmu_upgrade_site' ) != $GLOBALS['wp_db_version'] ) :
        ?>
        <h3><?php _e( 'Database Upgrade Required' ); ?></h3>
        <p><?php _e( 'WordPress has been updated! Before we send you on your way, we need to individually upgrade the sites in your network.' ); ?></p>
        <?php endif; ?>

        <p><?php _e( 'The database upgrade process may take a little while, so please be patient.' ); ?></p>
        <p><a class="button" href="upgrade.php?action=upgrade"><?php _e( 'Upgrade Network' ); ?></a></p>
        <?php
        /**
         * Fires before the footer on the network upgrade screen.
         *
         * @since MU
         */
        do_action( 'wpmu_upgrade_page' );
    break;
}
?>
</div>

<?php include( ABSPATH . 'wp-admin/admin-footer.php' ); ?>