File Parser.php has 4048 lines of code (exceeds 250 allowed). Consider refactoring.

Open

<?php
/**
 * PHP parser that converts wiki markup to HTML.
 *
 * This program is free software; you can redistribute it and/or modify

Parser has 147 functions (exceeds 20 allowed). Consider refactoring.

Open

#[\AllowDynamicProperties]
class Parser {

    # Flags for Parser::setFunctionHook
    public const SFH_NO_HASH = 1;

Function braceSubstitution has a Cognitive Complexity of 142 (exceeds 5 allowed). Consider refactoring.

Open

    public function braceSubstitution( array $piece, PPFrame $frame ) {
        // Flags

        // $text has been filled
        $found = false;

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Function handleInternalLinks2 has a Cognitive Complexity of 118 (exceeds 5 allowed). Consider refactoring.

Open

    private function handleInternalLinks2( &$s ) {
        static $tc = false, $e1, $e1_img;
        # the % is needed to support urlencoded titles as well
        if ( !$tc ) {
            $tc = Title::legalChars() . '#%';

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Method braceSubstitution has 310 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function braceSubstitution( array $piece, PPFrame $frame ) {
        // Flags

        // $text has been filled
        $found = false;

Function handleTables has a Cognitive Complexity of 76 (exceeds 5 allowed). Consider refactoring.

Open

    private function handleTables( $text ) {
        $lines = StringUtils::explode( "\n", $text );
        $out = '';
        $td_history = []; # Is currently a td tag open?
        $last_tag_history = []; # Save history of last lag activated (td, th or caption)

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Function doQuotes has a Cognitive Complexity of 76 (exceeds 5 allowed). Consider refactoring.

Open

    public function doQuotes( $text ) {
        $arr = preg_split( "/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE );
        $countarr = count( $arr );
        if ( $countarr == 1 ) {
            return $text;

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Function makeImage has a Cognitive Complexity of 69 (exceeds 5 allowed). Consider refactoring.

Open

    public function makeImage( LinkTarget $link, $options, $holders = false ) {
        # Check if the options text is of the form "options|alt text"
        # Options are:
        #  * thumbnail  make a thumbnail with enlarge-icon and caption, alignment depends on lang
        #  * left       no resizing, just left align. label is used for alt= only

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Method handleInternalLinks2 has 272 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function handleInternalLinks2( &$s ) {
        static $tc = false, $e1, $e1_img;
        # the % is needed to support urlencoded titles as well
        if ( !$tc ) {
            $tc = Title::legalChars() . '#%';

Function finalizeHeadings has a Cognitive Complexity of 63 (exceeds 5 allowed). Consider refactoring.

Open

    private function finalizeHeadings( $text, $origText, $isMain = true ) {
        # Inhibit editsection links if requested in the page
        if ( isset( $this->mDoubleUnderscores['noeditsection'] ) ) {
            $maybeShowEditLink = false;
        } else {

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Function renderImageGallery has a Cognitive Complexity of 60 (exceeds 5 allowed). Consider refactoring.

Open

    public function renderImageGallery( $text, array $params ) {
        $mode = false;
        if ( isset( $params['mode'] ) ) {
            $mode = $params['mode'];
        }

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Method finalizeHeadings has 207 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function finalizeHeadings( $text, $origText, $isMain = true ) {
        # Inhibit editsection links if requested in the page
        if ( isset( $this->mDoubleUnderscores['noeditsection'] ) ) {
            $maybeShowEditLink = false;
        } else {

Function statelessFetchTemplate has a Cognitive Complexity of 47 (exceeds 5 allowed). Consider refactoring.

Open

    public static function statelessFetchTemplate( $page, $parser = false ) {
        $title = Title::castFromLinkTarget( $page ); // for compatibility with return type
        $text = $skip = false;
        $finalTitle = $title;
        $deps = [];

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Method makeImage has 167 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function makeImage( LinkTarget $link, $options, $holders = false ) {
        # Check if the options text is of the form "options|alt text"
        # Options are:
        #  * thumbnail  make a thumbnail with enlarge-icon and caption, alignment depends on lang
        #  * left       no resizing, just left align. label is used for alt= only

Function extractSections has a Cognitive Complexity of 43 (exceeds 5 allowed). Consider refactoring.

Open

    private function extractSections( $text, $sectionId, $mode, $newText, ?PageReference $page = null ) {
        $magicScopeVariable = $this->lock();
        $this->startParse(
            $page,
            ParserOptions::newFromUser( RequestContext::getMain()->getUser() ),

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Method handleTables has 161 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function handleTables( $text ) {
        $lines = StringUtils::explode( "\n", $text );
        $out = '';
        $td_history = []; # Is currently a td tag open?
        $last_tag_history = []; # Save history of last lag activated (td, th or caption)

Method doQuotes has 142 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function doQuotes( $text ) {
        $arr = preg_split( "/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE );
        $countarr = count( $arr );
        if ( $countarr == 1 ) {
            return $text;

Method renderImageGallery has 141 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function renderImageGallery( $text, array $params ) {
        $mode = false;
        if ( isset( $params['mode'] ) ) {
            $mode = $params['mode'];
        }

Function cleanUpTocLine has a Cognitive Complexity of 34 (exceeds 5 allowed). Consider refactoring.

Open

    private function cleanUpTocLine( Node $container ) {
        '@phan-var Element|DocumentFragment $container';  // @var Element|DocumentFragment $container
        # Strip out HTML
        # Allowed tags are:
        # * <sup> and <sub> (T10393)

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Method statelessFetchTemplate has 120 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public static function statelessFetchTemplate( $page, $parser = false ) {
        $title = Title::castFromLinkTarget( $page ); // for compatibility with return type
        $text = $skip = false;
        $finalTitle = $title;
        $deps = [];

Function extensionSubstitution has a Cognitive Complexity of 31 (exceeds 5 allowed). Consider refactoring.

Open

    public function extensionSubstitution( array $params, PPFrame $frame, bool $processNowiki = false ) {
        static $errorStr = '<span class="error">';

        $name = $frame->expand( $params['name'] );
        if ( str_starts_with( $name, $errorStr ) ) {

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Function callParserFunction has a Cognitive Complexity of 29 (exceeds 5 allowed). Consider refactoring.

Open

    public function callParserFunction( PPFrame $frame, $function, array $args = [] ) {
        # Case sensitive functions
        if ( isset( $this->mFunctionSynonyms[1][$function] ) ) {
            $function = $this->mFunctionSynonyms[1][$function];
        } else {

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Function maybeMakeExternalImage has a Cognitive Complexity of 27 (exceeds 5 allowed). Consider refactoring.

Open

    private function maybeMakeExternalImage( $url ) {
        $imagesfrom = $this->mOptions->getAllowExternalImagesFrom();
        $imagesexception = (bool)$imagesfrom;
        $text = false;
        # $imagesfrom could be either a single string or an array of strings, parse out the latter

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Method extractSections has 96 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function extractSections( $text, $sectionId, $mode, $newText, ?PageReference $page = null ) {
        $magicScopeVariable = $this->lock();
        $this->startParse(
            $page,
            ParserOptions::newFromUser( RequestContext::getMain()->getUser() ),

Method callParserFunction has 69 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function callParserFunction( PPFrame $frame, $function, array $args = [] ) {
        # Case sensitive functions
        if ( isset( $this->mFunctionSynonyms[1][$function] ) ) {
            $function = $this->mFunctionSynonyms[1][$function];
        } else {

Method magicLinkCallback has 67 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function magicLinkCallback( array $m ) {
        if ( isset( $m[1] ) && $m[1] !== '' ) {
            # Skip anchor
            return $m[0];
        } elseif ( isset( $m[2] ) && $m[2] !== '' ) {

Method __construct has 21 arguments (exceeds 4 allowed). Consider refactoring.

Open

        ServiceOptions $svcOptions,
        MagicWordFactory $magicWordFactory,
        Language $contLang,
        ParserFactory $factory,
        UrlUtils $urlUtils,

Method parse has 64 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function parse(
        $text, PageReference $page, ParserOptions $options,
        $linestart = true, $clearState = true, $revid = null
    ) {
        if ( $clearState ) {

Method extensionSubstitution has 61 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function extensionSubstitution( array $params, PPFrame $frame, bool $processNowiki = false ) {
        static $errorStr = '<span class="error">';

        $name = $frame->expand( $params['name'] );
        if ( str_starts_with( $name, $errorStr ) ) {

Method makeFreeExternalLink has 61 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function makeFreeExternalLink( $url, $numPostProto ) {
        $trail = '';

        # The characters '<' and '>' (which were escaped by
        # internalRemoveHtmlTags()) should not be included in

Function getImageParams has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

Open

    private function getImageParams( $handler ) {
        if ( $handler ) {
            $handlerClass = get_class( $handler );
        } else {
            $handlerClass = '';

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Function extractTagsAndParams has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

Open

    public static function extractTagsAndParams( array $elements, $text, &$matches ) {
        static $n = 1;
        $stripped = '';
        $matches = [];

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Function magicLinkCallback has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.

Open

    private function magicLinkCallback( array $m ) {
        if ( isset( $m[1] ) && $m[1] !== '' ) {
            # Skip anchor
            return $m[0];
        } elseif ( isset( $m[2] ) && $m[2] !== '' ) {

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Method normalizeLinkUrl has 55 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public static function normalizeLinkUrl( $url ) {
        # Test for RFC 3986 IPv6 syntax
        $scheme = '[a-z][a-z0-9+.-]*:';
        $userinfo = '(?:[a-z0-9\-._~!$&\'()*+,;=:]|%[0-9a-f]{2})*';
        $ipv6Host = '\\[((?:[0-9a-f:]|%3[0-A]|%[46][1-6])+)\\]';

Method cleanUpTocLine has 54 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function cleanUpTocLine( Node $container ) {
        '@phan-var Element|DocumentFragment $container';  // @var Element|DocumentFragment $container
        # Strip out HTML
        # Allowed tags are:
        # * <sup> and <sub> (T10393)

Method handleExternalLinks has 53 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function handleExternalLinks( $text ) {
        $bits = preg_split( $this->mExtLinkBracketedRegex, $text, -1, PREG_SPLIT_DELIM_CAPTURE );
        // @phan-suppress-next-line PhanTypeComparisonFromArray See phan issue #3161
        if ( $bits === false ) {
            throw new RuntimeException( "PCRE failure" );

Method makeLimitReport has 50 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    protected function makeLimitReport() {
        $maxIncludeSize = $this->mOptions->getMaxIncludeSize();

        $cpuTime = $this->mOutput->getTimeProfile( 'cpu' );
        if ( $cpuTime !== null ) {

Method extractTagsAndParams has 50 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public static function extractTagsAndParams( array $elements, $text, &$matches ) {
        static $n = 1;
        $stripped = '';
        $matches = [];

Method getUserSig has 50 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function getUserSig( UserIdentity $user, $nickname = false, $fancySig = null ) {
        $username = $user->getName();

        # If not given, retrieve from the user object.
        if ( $nickname === false ) {

Method __construct has 48 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function __construct(
        ServiceOptions $svcOptions,
        MagicWordFactory $magicWordFactory,
        Language $contLang,
        ParserFactory $factory,

Method interwikiTransclude has 48 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function interwikiTransclude( LinkTarget $link, $action ) {
        if ( !$this->svcOptions->get( MainConfigNames::EnableScaryTranscluding ) ) {
            return wfMessage( 'scarytranscludedisabled' )->inContentLanguage()->text();
        }

Function getUserSig has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.

Open

    public function getUserSig( UserIdentity $user, $nickname = false, $fancySig = null ) {
        $username = $user->getName();

        # If not given, retrieve from the user object.
        if ( $nickname === false ) {

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Method internalParse has 47 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function internalParse( $text, $isMain = true, $frame = false ) {
        $origText = $text;

        # Hook to suspend the parser in this state
        if ( !$this->hookRunner->onParserBeforeInternalParse( $this, $text, $this->mStripState ) ) {

Method stripAltText has 45 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function stripAltText( $caption, $holders ) {
        # Strip bad stuff out of the title (tooltip).  We can't just use
        # replaceLinkHoldersText() here, because if this function is called
        # from handleInternalLinks2(), mLinkHolders won't be up-to-date.
        if ( $holders ) {

Method maybeMakeExternalImage has 45 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function maybeMakeExternalImage( $url ) {
        $imagesfrom = $this->mOptions->getAllowExternalImagesFrom();
        $imagesexception = (bool)$imagesfrom;
        $text = false;
        # $imagesfrom could be either a single string or an array of strings, parse out the latter

Method pstPass2 has 43 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function pstPass2( $text, UserIdentity $user ) {
        # Note: This is the timestamp saved as hardcoded wikitext to the database, we use
        # $this->contLang here in order to give everyone the same signature and use the default one
        # rather than the one selected in each user's preferences.  (see also T14815)
        $ts = $this->mOptions->getTimestamp();

Method handleDoubleUnderscore has 41 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function handleDoubleUnderscore( $text ) {
        # The position of __TOC__ needs to be recorded
        $mw = $this->magicWordFactory->get( 'toc' );
        if ( $mw->match( $text ) ) {
            $this->mShowToc = true;

Method getImageParams has 39 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function getImageParams( $handler ) {
        if ( $handler ) {
            $handlerClass = get_class( $handler );
        } else {
            $handlerClass = '';

Method getFlatSectionInfo has 39 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function getFlatSectionInfo( $text ) {
        $magicScopeVariable = $this->lock();
        $this->startParse(
            null,
            ParserOptions::newFromUser( RequestContext::getMain()->getUser() ),

Method clearState has 34 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function clearState() {
        $this->resetOutput();
        $this->mAutonumber = 0;
        $this->mLinkHolders = new LinkHolderArray(
            $this,

Method internalParseHalfParsed has 33 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function internalParseHalfParsed( $text, $isMain = true, $linestart = true ) {
        $text = $this->mStripState->unstripGeneral( $text );

        $text = BlockLevelPass::doBlockLevels( $text, $linestart );

Method argSubstitution has 32 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function argSubstitution( array $piece, PPFrame $frame ) {
        $error = false;
        $parts = $piece['parts'];
        $nameWithSpaces = $frame->expand( $piece['title'] );
        $argName = trim( $nameWithSpaces );

Function handleExternalLinks has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.

Open

    private function handleExternalLinks( $text ) {
        $bits = preg_split( $this->mExtLinkBracketedRegex, $text, -1, PREG_SPLIT_DELIM_CAPTURE );
        // @phan-suppress-next-line PhanTypeComparisonFromArray See phan issue #3161
        if ( $bits === false ) {
            throw new RuntimeException( "PCRE failure" );

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Function markerSkipCallback has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

    public function markerSkipCallback( $s, callable $callback ) {
        $i = 0;
        $out = '';
        while ( $i < strlen( $s ) ) {
            $markerStart = strpos( $s, self::MARKER_PREFIX, $i );

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Method cleanSig has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public function cleanSig( $text, $parsing = false ) {
        if ( !$parsing ) {
            $magicScopeVariable = $this->lock();
            $this->startParse(
                $this->mTitle,

Method handleMagicLinks has 26 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private function handleMagicLinks( $text ) {
        $prots = $this->urlUtils->validAbsoluteProtocols();
        $urlChar = self::EXT_LINK_URL_CLASS;
        $addr = self::EXT_LINK_ADDR;
        $space = self::SPACE_NOT_NL; #  non-newline space

Consider simplifying this complex logical expression.

Open

        if ( isset( $m[1] ) && $m[1] !== '' ) {
            # Skip anchor
            return $m[0];
        } elseif ( isset( $m[2] ) && $m[2] !== '' ) {
            # Skip HTML element

Function argSubstitution has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    public function argSubstitution( array $piece, PPFrame $frame ) {
        $error = false;
        $parts = $piece['parts'];
        $nameWithSpaces = $frame->expand( $piece['title'] );
        $argName = trim( $nameWithSpaces );

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Function localizeTOC has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    private static function localizeTOC(
        ?TOCData $tocData, Language $lang, ?ILanguageConverter $converter
    ) {
        if ( $tocData === null ) {
            return; // Nothing to do

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Function parseLinkParameter has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    private function parseLinkParameter( $value ) {
        $chars = self::EXT_LINK_URL_CLASS;
        $addr = self::EXT_LINK_ADDR;
        $prots = $this->urlUtils->validProtocols();
        $type = null;

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Function makeFreeExternalLink has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    private function makeFreeExternalLink( $url, $numPostProto ) {
        $trail = '';

        # The characters '<' and '>' (which were escaped by
        # internalRemoveHtmlTags()) should not be included in

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Function parse has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    public function parse(
        $text, PageReference $page, ParserOptions $options,
        $linestart = true, $clearState = true, $revid = null
    ) {
        if ( $clearState ) {

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Function fetchTemplateAndTitle has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

    public function fetchTemplateAndTitle( LinkTarget $link ) {
        // Use Title for compatibility with callbacks and return type
        $title = Title::newFromLinkTarget( $link );

        // Defaults to Parser::statelessFetchTemplate()

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Function handleDoubleUnderscore has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

    private function handleDoubleUnderscore( $text ) {
        # The position of __TOC__ needs to be recorded
        $mw = $this->magicWordFactory->get( 'toc' );
        if ( $mw->match( $text ) ) {
            $this->mShowToc = true;

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Method parse has 6 arguments (exceeds 4 allowed). Consider refactoring.

Open

        $text, PageReference $page, ParserOptions $options,
        $linestart = true, $clearState = true, $revid = null

Avoid deeply nested control flow statements.

Open

                        if ( $firstspace == -1 ) {
                            $firstspace = $i;
                        }

Consider simplifying this complex logical expression.

Open

        if ( $text === false && $parts->getLength() > 0
            && ( $this->ot['html']
                || $this->ot['pre']
                || ( $this->ot['wiki'] && $frame->isTemplate() )
            )

Method startExternalParse has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

    public function startExternalParse( ?PageReference $page, ParserOptions $options,
        $outputType, $clearState = true, $revId = null

Method preprocess has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

        $text,
        ?PageReference $page,
        ParserOptions $options,
        $revid = null,
        $frame = false

Method preSaveTransform has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

        $text,
        PageReference $page,
        UserIdentity $user,
        ParserOptions $options,
        $clearState = true

Method extractSections has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

    private function extractSections( $text, $sectionId, $mode, $newText, ?PageReference $page = null ) {

Function getExternalLinkAttribs has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

    public function getExternalLinkAttribs( $url ) {
        $attribs = [];
        $rel = self::getExternalLinkRel( $url, $this->getTitle() ) ?? '';

        $target = $this->mOptions->getExternalLinkTarget();

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Function getRevisionUser has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

    public function getRevisionUser(): ?string {
        if ( $this->mRevisionUser === null ) {
            $revObject = $this->getRevisionRecordObject();

            # if this template is subst: the revision id will be blank,

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Function normalizeLinkUrl has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

    public static function normalizeLinkUrl( $url ) {
        # Test for RFC 3986 IPv6 syntax
        $scheme = '[a-z][a-z0-9+.-]*:';
        $userinfo = '(?:[a-z0-9\-._~!$&\'()*+,;=:]|%[0-9a-f]{2})*';
        $ipv6Host = '\\[((?:[0-9a-f:]|%3[0-A]|%[46][1-6])+)\\]';

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Function setFunctionHook has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

    public function setFunctionHook( $id, callable $callback, $flags = 0 ) {
        $oldVal = $this->mFunctionHooks[$id][0] ?? null;
        $this->mFunctionHooks[$id] = [ $callback, $flags ];

        # Add to function cache

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Avoid too many return statements within this method.

Open

                    return $m[0];

Avoid too many return statements within this method.

Open

            return $m[0];

Avoid too many return statements within this method.

Open

                return $newText;

Avoid too many return statements within this method.

Open

        return $marker;

Avoid too many return statements within this method.

Open

            return Linker::makeExternalLink(
                $url,
                "{$keyword} {$id}",
                true,
                $cssClass,

Avoid too many return statements within this method.

Open

            return $this->getLinkRenderer()->makeKnownLink(
                SpecialPage::getTitleFor( 'Booksources', $num ),
                "ISBN $isbn",
                [
                    'class' => 'internal mw-magiclink-isbn',

Avoid too many return statements within this method.

Open

                return $text;

Avoid too many return statements within this method.

Open

        return $outText;

Function internalParse has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    public function internalParse( $text, $isMain = true, $frame = false ) {
        $origText = $text;

        # Hook to suspend the parser in this state
        if ( !$this->hookRunner->onParserBeforeInternalParse( $this, $text, $this->mStripState ) ) {

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Similar blocks of code found in 2 locations. Consider refactoring.

Open

                } elseif ( $thislen == 3 ) {
                    // three quotes - open or close bold
                    if ( $state === 'b' ) {
                        $output .= '</b>';
                        $state = '';

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Similar blocks of code found in 2 locations. Consider refactoring.

Open

                if ( $thislen == 2 ) {
                    // two quotes - open or close italics
                    if ( $state === 'i' ) {
                        $output .= '</i>';
                        $state = '';

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