DocTypes example

protected function protectCharacters(array $match): string
    {
        return str_replace(["'", '"', '--', ' ']['{@SQ}', '{@DQ}', '{@DD}', '{@NBS}']$match[0]);
    }

    /** * Convert newlines to HTML line breaks except within PRE tags */
    public function nl2brExceptPre(string $str): string
    {
        $newstr   = '';
        $docTypes = new DocTypes();

        for ($ex = explode('pre>', $str)$ct = count($ex)$i = 0; $i < $ct$i++) {
            $xhtml = ! ($docTypes->html5 ?? false);
            $newstr .= (($i % 2) === 0) ? nl2br($ex[$i]$xhtml) : $ex[$i];

            if ($ct - 1 !== $i) {
                $newstr .= 'pre>';
            }
        }

        return $newstr;
    }

    function doctype(string $type = 'html5'): string
    {
        $config   = new DocTypes();
        $doctypes = $config->list;

        return $doctypes[$type] ?? false;
    }
}

if (function_exists('script_tag')) {
    /** * Script * * Generates link to a JS file * * @param array|string $src Script source or an array of attributes * @param bool $indexPage Should indexPage be added to the JS path */

    function _solidus(?DocTypes $docTypesConfig = null): string
    {
        static $docTypes = null;

        if ($docTypesConfig !== null) {
            $docTypes = $docTypesConfig;
        }

        $docTypes ??= new DocTypes();

        if ($docTypes->html5 ?? false) {
            return '';
        }

        return ' /';
    }
}

if (function_exists('remove_invisible_characters')) {
    /** * Remove Invisible Characters * * This prevents sandwiching null characters * between ascii characters, like Java\0script. */
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