EVOLUTION-MANAGER

Edit File: class.u.php

<?php
defined('ABSPATH') || defined('DUPXABSPATH') || exit;

/**
 * Various Static Utility methods for working with the installer
 *
 * Standard: PSR-2
 * @link http://www.php-fig.org/psr/psr-2 Full Documentation
 *
 * @package SC\DUPX\U
 *
 */
class DUPX_U
{

public static function init()
    {
        if (!isset($_SERVER['REQUEST_URI'])) {

$_SERVER['REQUEST_URI'] = substr($_SERVER['SCRIPT_NAME'], 0);

if (isset($_SERVER['QUERY_STRING']) AND $_SERVER['QUERY_STRING'] != "") {

$_SERVER['REQUEST_URI'] .= '?'.$_SERVER['QUERY_STRING'];
            }
        }
    }

/**
     * Adds a slash to the end of a file or directory path
     *
     * @param string $path		A path
     *
     * @return string The original $path with a with '/' added to the end.
     */
    public static function addSlash($path)
    {
        $last_char = substr($path, strlen($path) - 1, 1);
        if ($last_char != '/') {
            $path .= '/';
        }
        return $path;
    }

/**
     * Add replacement strings with encoding to $GLOBALS['REPLACE_LIST']
     *
     * @param string $search
     * @param string $replace
     *
     */
    public static function queueReplacementWithEncodings($search, $replace)
    {
        array_push($GLOBALS['REPLACE_LIST'], array('search' => $search, 'replace' => $replace));

$search_json  = str_replace('"', "", json_encode($search));
        $replace_json = str_replace('"', "", json_encode($replace));

if ($search != $search_json) {
            array_push($GLOBALS['REPLACE_LIST'], array('search' => $search_json, 'replace' => $replace_json));
        }

$search_urlencode  = urlencode($search);
        $replace_urlencode = urlencode($replace);

if ($search != $search_urlencode) {
            array_push($GLOBALS['REPLACE_LIST'], array('search' => $search_urlencode, 'replace' => $replace_urlencode));
        }
    }

/**
     * Add replace strings to substitute old url to new url
     * 1) no protocol old url to no protocol new url (es. //www.hold.url  => //www.new.url)
     * 2) wrong protocol new url to right protocol new url (es. http://www.new.url => https://www.new.url)
     *
     * @param string $old
     * @param string $new
     */
    public static function replacmentUrlOldToNew($old, $new)
    {
        //SEARCH WITH NO PROTOCOL: RAW "//"
        $url_old_raw    = str_ireplace(array('http://', 'https://'), '//', $old);
        $url_new_raw    = str_ireplace(array('http://', 'https://'), '//', $new);
        self::queueReplacementWithEncodings($url_old_raw, $url_new_raw);
        //FORCE NEW PROTOCOL "//"
        $url_new_info   = parse_url($new);
        $url_new_domain = $url_new_info['scheme'].'://'.$url_new_info['host'];

if ($url_new_info['scheme'] == 'http') {
            $url_new_wrong_protocol = 'https://'.$url_new_info['host'];
        } else {
            $url_new_wrong_protocol = 'http://'.$url_new_info['host'];
        }
        self::queueReplacementWithEncodings($url_new_wrong_protocol, $url_new_domain);
    }

/**
     * Does one string contain other
     *
     * @param string $haystack		The full string to search
     * @param string $needle		The substring to search on
     *
     * @return bool Returns true if the $needle was found in the $haystack
     */
    public static function contains($haystack, $needle)
    {
        $pos = strpos($haystack, $needle);
        return ($pos !== false);
    }

/**
     * Recursively copy files from one directory to another
     *
     * @param string $src - Source of files being moved
     * @param string $dest - Destination of files being moved
     * @param string $recursive recursively remove all items
     *
     * @return bool Returns true if all content was copied
     */
    public static function copyDirectory($src, $dest, $recursive = true)
    {
        //RSR TODO:Verify this logic
        $success = true;

// If source is not a directory stop processing
        if (!is_dir($src)) {
            return false;
        }

// If the destination directory does not exist create it
        if (!DupProSnapLibIOU::dirWriteCheckOrMkdir($dest, 'u+rwx')) {
            // If the destination directory could not be created stop processing
            return false;
        }

// Open the source directory to read in files
        $iterator = new DirectoryIterator($src);

foreach ($iterator as $file) {
            if ($file->isFile()) {
                $success = copy($file->getRealPath(), "$dest/".$file->getFilename());
            } else if (!$file->isDot() && $file->isDir() && $recursive) {
                $success = self::copyDirectory($file->getRealPath(), "$dest/$file", $recursive);
            }

if (!$success) {
                break;
            }
        }

return $success;
    }

/**
     *  Check to see if the internet is accessible
     *
     *  Note: fsocketopen on windows doesn't seem to honor $timeout setting.
     *
     *  @param string $url		A url e.g without prefix "ajax.googleapis.com"
     *  @param string $port		A valid port number
     *
     *  @return bool	Returns true PHP can request the URL
     */
    public static function isURLActive($url, $port, $timeout = 5)
    {
        if (function_exists('fsockopen')) {
            if (DupProSnapLibUtil::wp_is_ini_value_changeable('default_socket_timeout'))
                @ini_set("default_socket_timeout", $timeout);
            $port      = isset($port) && is_integer($port) ? $port : 80;
            $connected = @fsockopen($url, $port, $errno, $errstr, $timeout); //website and port
            if ($connected) {
                @fclose($connected);
                return true;
            }
            return false;
        } else {
            return false;
        }
    }

/**
     * move all folder content up to parent
     *
     * @param string $subFolderName full path
     * @param boolean $deleteSubFolder if true delete subFolder after moved all
     * @return boolean
     *
     */
    public static function moveUpfromSubFolder($subFolderName, $deleteSubFolder = false)
    {
        if (!is_dir($subFolderName)) {
            return false;
        }

$parentFolder = dirname($subFolderName);
        if (!is_writable($parentFolder)) {
            return false;
        }

$success = true;
        if (($subList = glob(rtrim($subFolderName, '/').'/*', GLOB_NOSORT)) === false) {
            DUPX_Log::info("Problem glob folder ".$subFolderName);
            return false;
        } else {
            foreach ($subList as $cName) {
                $destination = $parentFolder.'/'.basename($cName);
                if (file_exists($destination)) {
                    $success = self::deletePath($destination);
                }

if ($success) {
                    $success = rename($cName, $destination);
                } else {
                    break;
                }
            }

if ($success && $deleteSubFolder) {
                $success = self::deleteDirectory($subFolderName, true);
            }
        }

if (!$success) {
            DUPX_Log::info("Problem om moveUpfromSubFolder subFolder:".$subFolderName);
        }

return $success;
    }

/**
     * @param string $archive_filepath  full path of zip archive
     *
     * @return boolean|string  path of dup-installer folder of false if not found
     */
    public static function findDupInstallerFolder($archive_filepath)
    {
        if (!class_exists('ZipArchive')) {
            return '';
        }
        $zipArchive = new ZipArchive();
        $result     = false;

if ($zipArchive->open($archive_filepath) === true) {
            for ($i = 0; $i < $zipArchive->numFiles; $i++) {
                $stat     = $zipArchive->statIndex($i);
                $safePath = rtrim(self::setSafePath($stat['name']), '/');
                if (substr_count($safePath, '/') > 2) {
                    continue;
                }
                $exploded  = explode('/', $safePath);
                if (($dup_index = array_search('dup-installer', $exploded)) !== false) {
                    $result = implode('/', array_slice($exploded, 0, $dup_index));
                    break;
                }
            }
            if ($zipArchive->close() !== true) {
                DUPX_Log::info("Can't close ziparchive:".$archive_filepath);
                return false;
            }
        } else {
            DUPX_Log::info("Can't open zip archive:".$archive_filepath);
            return false;
        }

return $result;
    }

/**
     *  A safe method used to copy larger files
     *
     * @param string $source		The path to the file being copied
     * @param string $destination	The path to the file being made
     *
     * @return null
     */
    public static function copyFile($source, $destination)
    {
        $sp = fopen($source, 'r');
        $op = fopen($destination, 'w');

while (!feof($sp)) {
            $buffer = fread($sp, 512);  // use a buffer of 512 bytes
            fwrite($op, $buffer);
        }
        // close handles
        fclose($op);
        fclose($sp);
    }

/**
     * Safely remove a directory and recursively files only if needed
     *
     * @param string $directory The full path to the directory to remove
     * @param string $recursive recursively remove all items
     *
     * @return bool Returns true if all content was removed
     */
    public static function deleteDirectory($directory, $recursive)
    {
        $success = true;

if ($excepted_subdirectories = null) {
            $excepted_subdirectories = array();
        }

if (!file_exists($directory)) {
            return false;
        }

$filenames = array_diff(scandir($directory), array('.', '..'));

foreach ($filenames as $filename) {
            if (is_dir("$directory/$filename")) {
                if ($recursive) {
                    $success = self::deleteDirectory("$directory/$filename", true);
                }
            } else {
                $success = @unlink("$directory/$filename");
            }

if ($success === false) {
                //self::log("Problem deleting $directory/$filename");
                break;
            }
        }

return $success && rmdir($directory);
    }

/**
     * Safely remove a file or directory and recursively if needed
     *
     * @param string $directory The full path to the directory to remove
     *
     * @return bool Returns true if all content was removed
     */
    public static function deletePath($path)
    {
        $success = true;

if (is_dir($path)) {
            $success = self::deleteDirectory($path, true);
        } else {
            $success = @unlink($path);

if ($success === false) {
                DUPX_Log::info(__FUNCTION__.": Problem deleting file:".$path);
            }
        }

return $success;
    }

/**
     * Dumps a variable for debugging
     *
     * @param string $var The variable to view
     * @param bool	 $pretty Pretty print the var
     *
     * @return object A visual representation of an object
     */
    public static function dump($var, $pretty = false)
    {
        if ($pretty) {
            echo '<pre>';
            print_r($var);
            echo '</pre>';
        } else {
            print_r($var);
        }
    }

public static function echoBool($val)
    {
        if ($val) {
            echo 'true';
        } else {
            echo 'false';
        }
    }

/**
     * Return a string with the elapsed time
     *
     * @see getMicrotime()
     *
     * @param mixed number $end     The final time in the sequence to measure
     * @param mixed number $start   The start time in the sequence to measure
     *
     * @return  string   The time elapsed from $start to $end
     */
    public static function elapsedTime($end, $start)
    {
        return sprintf("%.4f sec.", abs($end - $start));
    }

/**
     *  Returns 256 spaces
     *
     *  PHP_SAPI for fcgi requires a data flush of at least 256
     *  bytes every 40 seconds or else it forces a script halt
     *
     * @return string A series of 256 spaces ' '
     */
    public static function fcgiFlush()
    {
        echo(str_repeat(' ', 256));
        @flush();
    }

/**
     * Get current microtime as a float.  Method is used for simple profiling
     *
     * @see elapsedTime
     *
     * @return  string   A float in the form "msec sec", where sec is the number of seconds since the Unix epoch
     */
    public static function getMicrotime()
    {
        return microtime(true);
    }

/**
     *  Gets the size of a variable in memory
     *
     *  @param $var		A valid PHP variable
     *
     *  @returns int	The amount of memory the variable has consumed
     */
    public static function getVarSize($var)
    {
        $start_memory = memory_get_usage();
        $var          = unserialize(serialize($var));
        return memory_get_usage() - $start_memory - PHP_INT_SIZE * 8;
    }

/**
     * Is the string JSON
     *
     * @param string $string Any string blob
     *
     * @return bool Returns true if the string is JSON encoded
     */
    public static function isJSON($string)
    {

return is_string($string) && is_array(json_decode($string, true)) ? true : false;
    }

/**
     * Does a string have non ASCII characters
     *
     * @param string $string Any string blob
     *
     * @return bool Returns true if any non ASCII character is found in the blob
     */
    public static function isNonASCII($string)
    {
        return preg_match('/[^\x20-\x7f]/', $string);
    }

/**
     * Is an object traversable
     *
     * @param object $obj The object to evaluate
     *
     * @return bool Returns true if the object can be looped over safely
     */
    public static function isTraversable($obj)
    {
        if (is_null($obj))
            return false;

return (is_array($obj) || $obj instanceof Traversable);
    }

/**
     *  The characters that are special in the replacement value of preg_replace are not the
     *  same characters that are special in the pattern.  Allows for '$' to be safely passed.
     *
     *  @param string $str		The string to replace on
     */
    public static function pregReplacementQuote($str)
    {
        return preg_replace('/(\$|\\\\)(?=\d)/', '\\\\\1', $str);
    }

/**
     * Display human readable byte sizes
     *
     * @param string $size	The size in bytes
     *
     * @return string Human readable bytes such as 50MB, 1GB
     */
    public static function readableByteSize($size)
    {
        try {
            $units = array('B', 'KB', 'MB', 'GB', 'TB');
            for ($i = 0; $size >= 1024 && $i < 4; $i++)
                $size  /= 1024;
            return round($size, 2).$units[$i];
        }
        catch (Exception $e) {
            return "n/a";
        }
    }

/**
     * Converts shorthand memory notation value to bytes
     * From http://php.net/manual/en/function.ini-get.php
     *
     * @param $val Memory size shorthand notation string
     *
     * @return int	Returns the numeric byte from 1MB to 1024
     */
    public static function returnBytes($val)
    {
        $val  = trim($val);
        $last = strtolower($val[strlen($val) - 1]);
        $val  = intval($val);
        switch ($last) {
            // The 'G' modifier is available since PHP 5.1.0
            case 'g':
                $val *= 1024;
            case 'm':
                $val *= 1024;
            case 'k':
                $val *= 1024;
                break;
            default :
                $val = null;
        }
        return $val;
    }

/**
     *  Filter the string to escape the quote
     *
     *  @param string $val		The value to escape quote
     *
     *  @return string Returns the input value escaped
     */
    public static function safeQuote($val)
    {
        $val = addslashes($val);
        return $val;
    }

/**
     *  Makes path safe for any OS for PHP
     *
     *  Paths should ALWAYS READ be "/"
     * 		uni:  /home/path/file.txt
     * 		win:  D:/home/path/file.txt
     *
     *  @param string $path		The path to make safe
     *
     *  @return string The original $path with a with all slashes facing '/'.
     */
    public static function setSafePath($path)
    {
        return str_replace("\\", "/", $path);
    }

/**
     *  Looks for a list of strings in a string and returns each list item that is found
     *
     *  @param array  $list		An array of strings to search for
     *  @param string $haystack	The string blob to search through
     *
     *  @return array An array of strings from the $list array found in the $haystack
     */
    public static function getListValues($list, $haystack)
    {
        $found = array();
        foreach ($list as $var) {
            if (strstr($haystack, $var) !== false) {
                array_push($found, $var);
            }
        }
        return $found;
    }

/**
     * Tests a CDN URL to see if it responds
     *
     * @param string $url	The URL to ping
     * @param string $port	The URL port to use
     *
     * @return bool Returns true if the CDN URL is active
     */
    public static function tryCDN($url, $port)
    {
        if ($GLOBALS['FW_USECDN']) {
            return DUPX_HTTP::is_url_active($url, $port);
        } else {
            return false;
        }
    }

/**
     *  Makes path unsafe for any OS for PHP used primarily to show default
     *  Windows OS path standard
     *
     *  @param string $path		The path to make unsafe
     *
     *  @return string The original $path with a with all slashes facing '\'.
     */
    public static function unsetSafePath($path)
    {
        return str_replace("/", "\\", $path);
    }

/**
     *  Check PHP version
     *
     *  @param string $version		PHP version we looking for
     *
     *  @return boolean Returns true if version is same or above.
     */
    public static function isVersion($version)
    {
        return (version_compare(PHP_VERSION, $version) >= 0);
    }

/**
     * Checks if ssl is enabled
     * @return bool
     */
    public static function is_ssl()
    {
        if (isset($_SERVER['HTTPS'])) {
            if ('on' == strtolower($_SERVER['HTTPS']))
                return true;
            if ('1' == $_SERVER['HTTPS'])
                return true;
        } elseif (isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] )) {
            return true;
        }

return false;
    }

/**
     * @param $url string The URL whichs domain you want to get
     * @return string The domain part of the given URL
     *                  www.myurl.co.uk     => myurl.co.uk
     *                  www.google.com      => google.com
     *                  my.test.myurl.co.uk => myurl.co.uk
     *                  www.myurl.localweb  => myurl.localweb
     *
     */
    public static function getDomain($url)
    {
        $pieces = parse_url($url);
        $domain = isset($pieces['host']) ? $pieces['host'] : '';
        if (strpos($domain, ".") !== false) {
            if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $regs)) {
                return $regs['domain'];
            } else {
                $exDomain = explode('.', $domain);
                return implode('.', array_slice($exDomain, -2, 2));
            }
        } else {
            return $domain;
        }
    }

/**
     * 
     * @param string $oldSubUrl
     * @param string $oldMainUrl
     * @return string
     */
    public static function getDefaultURL($oldSubUrl, $oldMainUrl)
    {
        $paramsManager = DUPX_Paramas_Manager::getInstance();
        $newMainUrl    = $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_URL_NEW);

$parsedNewMainUrl = parse_url($newMainUrl);
        $parsedOldMainUrl = parse_url($oldMainUrl);
        $parsedOldSubUrl  = parse_url($oldSubUrl);

$oldMainDomain = $parsedOldMainUrl['host'];
        $oldSubDomain  = $parsedOldSubUrl['host'];
        $newMainDomain = $parsedNewMainUrl['host'];

// PARSE SCHEME
        $resultScheme = isset($parsedNewMainUrl['scheme']) ? $parsedNewMainUrl['scheme'] : 'http';

// PARSE HOST
        if ($oldMainDomain === $oldSubDomain) {
            $resultDomain = $newMainDomain;
        } else {
            $oldNoWwwMainDomain = (strpos($oldMainDomain, 'www.') === 0) ? substr($oldMainDomain, 4) : $oldMainDomain;
            $newNoWwwMainDomain = (strpos($newMainDomain, 'www.') === 0) ? substr($newMainDomain, 4) : $newMainDomain;

if (($pos = strrpos($oldSubDomain, $oldNoWwwMainDomain)) === strlen($oldSubDomain) - strlen($oldNoWwwMainDomain)) {
                $subDif       = substr($oldSubDomain, 0, $pos);
                $resultDomain = $subDif.$newNoWwwMainDomain;
            } else {
                // If I can't find a match it is a non-manageable url so I take the value of the old url.
                $resultDomain = $oldSubDomain;
            }
        }

// PARSE PATH
        $oldMainPath = isset($parsedOldMainUrl['path']) ? $parsedOldMainUrl['path'] : '';
        $oldSubPath  = isset($parsedOldSubUrl['path']) ? $parsedOldSubUrl['path'] : '';
        $newMainPath = isset($parsedNewMainUrl['path']) ? $parsedNewMainUrl['path'] : '';

if ($oldMainPath === $oldSubPath) {
            $resultPath = $newMainPath;
        } else {
            if (strpos($oldSubPath, $oldMainPath) === 0) {
                $subDif     = substr($oldSubPath, strlen($oldMainPath));
                $resultPath = $newMainPath.'/'.trim($subDif, '/');
            } else {
                // If I can't find a match it is a non-manageable path so I take the value of the old path.
                $resultPath = $oldSubPath;
            }
        }

if (empty($resultPath) || $resultPath === '/') {
            $resultPath = '';
        }

return $resultScheme.'://'.$resultDomain.'/'.trim($resultPath, '/');
    }

/**
     * Get default chunk size in byte
     * 
     * @param int $min_chunk_size Min minimum chunk size in bytes
     * @return int An integer chunk size  byte value.
     */
    public static function get_default_chunk_size_in_byte($min_chunk_size = '')
    {

if (empty($min_chunk_size))
            $min_chunk_size                    = 2 * DUPLICATOR_PRO_INSTALLER_MB_IN_BYTES; // 2 MB;
        $post_max_size_in_bytes            = self::get_bytes_from_shorthand(ini_get('post_max_size'));
        $considered_post_max_size_in_bytes = $post_max_size_in_bytes - DUPLICATOR_PRO_INSTALLER_KB_IN_BYTES;

$upload_max_filesize_in_bytes            = self::get_bytes_from_shorthand(ini_get('upload_max_filesize'));
        $considered_upload_max_filesize_in_bytes = $upload_max_filesize_in_bytes - DUPLICATOR_PRO_INSTALLER_KB_IN_BYTES;

$memory_limit_in_bytes            = self::get_bytes_from_shorthand(ini_get('memory_limit'));
        $considered_memory_limit_in_bytes = $memory_limit_in_bytes - DUPLICATOR_PRO_INSTALLER_KB_IN_BYTES;

$chunk_size_in_byte = min(
            $considered_post_max_size_in_bytes,
            $considered_upload_max_filesize_in_bytes,
            $considered_memory_limit_in_bytes,
            // In extraction process, 2 MB is improving speed, so we are using 5MB instead of 10 MB
            $min_chunk_size
        );

return $chunk_size_in_byte;
    }

/**
     * Converts a shorthand byte value to an integer byte value.
     *
     * @param string $value A (PHP ini) byte value, either shorthand or ordinary.
     * @return int An integer byte value.
     */
    private static function get_bytes_from_shorthand($value)
    {
        $value = strtolower(trim($value));
        $bytes = (int) $value;

if (false !== strpos($value, 'g')) {
            $bytes *= DUPLICATOR_PRO_GB_IN_BYTES;
        } elseif (false !== strpos($value, 'm')) {
            $bytes *= DUPLICATOR_PRO_INSTALLER_MB_IN_BYTES;
        } elseif (false !== strpos($value, 'k')) {
            $bytes *= DUPLICATOR_PRO_INSTALLER_KB_IN_BYTES;
        }

// For windows 32 bit int max limit
        if ($bytes < 0) {
            return PHP_INT_MAX;
        }

return min($bytes, PHP_INT_MAX);
        // Deal with large (float) values which run into the maximum integer size.
    }

/**
     * Get default chunk size in KB
     *
     * @param int $min_chunk_size Min minimum chunk size in bytes
     * @return int An integer chunk size KB value.
     */
    public static function get_default_chunk_size_in_kb($min_chunk_size = '')
    {
        if (empty($min_chunk_size))
            $min_chunk_size = 10 * DUPLICATOR_PRO_INSTALLER_MB_IN_BYTES; // 10 MB;

$chunk_size_in_byte = self::get_default_chunk_size_in_byte($min_chunk_size);
        $chunk_size_in_kb   = floor($chunk_size_in_byte / DUPLICATOR_PRO_INSTALLER_KB_IN_BYTES);

return $chunk_size_in_kb;
    }

/**
     * Get default chunk size in MB
     * Not used now, but for future use
     *
     * @param int $min_chunk_size Min minimum chunk size in bytes
     * @return int An integer chunk size MB value.
     */
    public static function get_default_chunk_size_in_mb($min_chunk_size = '')
    {
        if (empty($min_chunk_size))
            $min_chunk_size = 10 * DUPLICATOR_PRO_INSTALLER_MB_IN_BYTES; // 10 MB;

$chunk_size_in_byte = self::get_default_chunk_size_in_byte($min_chunk_size);
        $chunk_size_in_mb   = floor($chunk_size_in_byte / DUPLICATOR_PRO_INSTALLER_MB_IN_BYTES);

return $chunk_size_in_mb;
    }
    // START ESCAPING AND SANITIZATION

/**
     * Escaping for HTML blocks.
     *
     *
     * @param string $text
     * @return string
     */
    public static function esc_html($text)
    {
        $safe_text = DupProSnapJsonU::wp_check_invalid_utf8($text);
        $safe_text = self::_wp_specialchars($safe_text, ENT_QUOTES);
        /**
         * Filters a string cleaned and escaped for output in HTML.
         *
         * Text passed to esc_html() is stripped of invalid or special characters
         * before output.
         *
         * @param string $safe_text The text after it has been escaped.
         * @param string $text      The text prior to being escaped.
         */
        return $safe_text;
    }

/**
     * Escape single quotes, htmlspecialchar " < > &, and fix line endings.
     *
     * Escapes text strings for echoing in JS. It is intended to be used for inline JS
     * (in a tag attribute, for example onclick="..."). Note that the strings have to
     * be in single quotes. The {@see 'js_escape'} filter is also applied here.
     *
     *
     * @param string $text The text to be escaped.
     * @return string Escaped text.
     */
    public static function esc_js($text)
    {
        $safe_text = DupProSnapJsonU::wp_check_invalid_utf8($text);
        $safe_text = self::_wp_specialchars($safe_text, ENT_COMPAT);
        $safe_text = preg_replace('/&#(x)?0*(?(1)27|39);?/i', "'", stripslashes($safe_text));
        $safe_text = str_replace("\r", '', $safe_text);
        $safe_text = str_replace("\n", '\\n', addslashes($safe_text));
        /**
         * Filters a string cleaned and escaped for output in JavaScript.
         *
         * Text passed to esc_js() is stripped of invalid or special characters,
         * and properly slashed for output.
         *
         * @param string $safe_text The text after it has been escaped.
         * @param string $text      The text prior to being escaped.
         */
        return $safe_text;
    }

/**
     * Escaping for HTML attributes.
     *
     * @param string $text
     * @return string
     */
    public static function esc_attr($text)
    {
        $safe_text = DupProSnapJsonU::wp_check_invalid_utf8($text);
        $safe_text = self::_wp_specialchars($safe_text, ENT_QUOTES);
        /**
         * Filters a string cleaned and escaped for output in an HTML attribute.
         *
         * Text passed to esc_attr() is stripped of invalid or special characters
         * before output.
         *
         * @param string $safe_text The text after it has been escaped.
         * @param string $text      The text prior to being escaped.
         */
        return $safe_text;
    }

/**
     * Escaping for textarea values.
     *
     * @param string $text
     * @return string
     */
    public static function esc_textarea($text)
    {
        $safe_text = htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
        /**
         * Filters a string cleaned and escaped for output in a textarea element.
         *
         * @param string $safe_text The text after it has been escaped.
         * @param string $text      The text prior to being escaped.
         */
        return $safe_text;
    }

/**
     * Escape an HTML tag name.
     *
     * @param string $tag_name
     * @return string
     */
    function tag_escape($tag_name)
    {
        $safe_tag = strtolower(preg_replace('/[^a-zA-Z0-9_:]/', '', $tag_name));
        /**
         * Filters a string cleaned and escaped for output as an HTML tag.
         *
         * @param string $safe_tag The tag name after it has been escaped.
         * @param string $tag_name The text before it was escaped.
         */
        return $safe_tag;
    }

/**
     * Converts a number of special characters into their HTML entities.
     *
     * Specifically deals with: &, <, >, ", and '.
     *
     * $quote_style can be set to ENT_COMPAT to encode " to
     * &quot;, or ENT_QUOTES to do both. Default is ENT_NOQUOTES where no quotes are encoded.
     *
     * @access private
     *
     * @staticvar string $_charset
     *
     * @param string     $string         The text which is to be encoded.
     * @param int|string $quote_style    Optional. Converts double quotes if set to ENT_COMPAT,
     *                                   both single and double if set to ENT_QUOTES or none if set to ENT_NOQUOTES.
     *                                   Also compatible with old values; converting single quotes if set to 'single',
     *                                   double if set to 'double' or both if otherwise set.
     *                                   Default is ENT_NOQUOTES.
     * @param string     $charset        Optional. The character encoding of the string. Default is false.
     * @param bool       $double_encode  Optional. Whether to encode existing html entities. Default is false.
     * @return string The encoded text with HTML entities.
     */
    public static function _wp_specialchars($string, $quote_style = ENT_NOQUOTES, $charset = false, $double_encode = false)
    {
        $string = (string) $string;

if (0 === strlen($string))
            return '';

// Don't bother if there are no specialchars - saves some processing
        if (!preg_match('/[&<>"\']/', $string))
            return $string;

// Account for the previous behaviour of the function when the $quote_style is not an accepted value
        if (empty($quote_style))
            $quote_style = ENT_NOQUOTES;
        elseif (!in_array($quote_style, array(0, 2, 3, 'single', 'double'), true))
            $quote_style = ENT_QUOTES;

// Store the site charset as a static to avoid multiple calls to wp_load_alloptions()
        if (!$charset) {
            static $_charset = null;
            if (!isset($_charset)) {
                $_charset = '';
            }
            $charset = $_charset;
        }

if (in_array($charset, array('utf8', 'utf-8', 'UTF8')))
            $charset = 'UTF-8';

$_quote_style = $quote_style;

if ($quote_style === 'double') {
            $quote_style  = ENT_COMPAT;
            $_quote_style = ENT_COMPAT;
        } elseif ($quote_style === 'single') {
            $quote_style = ENT_NOQUOTES;
        }

if (!$double_encode) {
            // Guarantee every &entity; is valid, convert &garbage; into &amp;garbage;
            // This is required for PHP < 5.4.0 because ENT_HTML401 flag is unavailable.
            $string = self::wp_kses_normalize_entities($string);
        }

$string = @htmlspecialchars($string, $quote_style, $charset, $double_encode);

// Back-compat.
        if ('single' === $_quote_style)
            $string = str_replace("'", '&#039;', $string);

return $string;
    }

/**
     * Converts a number of HTML entities into their special characters.
     *
     * Specifically deals with: &, <, >, ", and '.
     *
     * $quote_style can be set to ENT_COMPAT to decode " entities,
     * or ENT_QUOTES to do both " and '. Default is ENT_NOQUOTES where no quotes are decoded.
     *
     * @param string     $string The text which is to be decoded.
     * @param string|int $quote_style Optional. Converts double quotes if set to ENT_COMPAT,
     *                                both single and double if set to ENT_QUOTES or
     *                                none if set to ENT_NOQUOTES.
     *                                Also compatible with old _wp_specialchars() values;
     *                                converting single quotes if set to 'single',
     *                                double if set to 'double' or both if otherwise set.
     *                                Default is ENT_NOQUOTES.
     * @return string The decoded text without HTML entities.
     */
    public static function wp_specialchars_decode($string, $quote_style = ENT_NOQUOTES)
    {
        $string = (string) $string;

if (0 === strlen($string)) {
            return '';
        }

// Don't bother if there are no entities - saves a lot of processing
        if (strpos($string, '&') === false) {
            return $string;
        }

// Match the previous behaviour of _wp_specialchars() when the $quote_style is not an accepted value
        if (empty($quote_style)) {
            $quote_style = ENT_NOQUOTES;
        } elseif (!in_array($quote_style, array(0, 2, 3, 'single', 'double'), true)) {
            $quote_style = ENT_QUOTES;
        }

// More complete than get_html_translation_table( HTML_SPECIALCHARS )
        $single      = array('&#039;' => '\'', '&#x27;' => '\'');
        $single_preg = array('/&#0*39;/' => '&#039;', '/&#x0*27;/i' => '&#x27;');
        $double      = array('&quot;' => '"', '&#034;' => '"', '&#x22;' => '"');
        $double_preg = array('/&#0*34;/' => '&#034;', '/&#x0*22;/i' => '&#x22;');
        $others      = array('&lt;' => '<', '&#060;' => '<', '&gt;' => '>', '&#062;' => '>', '&amp;' => '&', '&#038;' => '&', '&#x26;' => '&');
        $others_preg = array('/&#0*60;/' => '&#060;', '/&#0*62;/' => '&#062;', '/&#0*38;/' => '&#038;', '/&#x0*26;/i' => '&#x26;');

if ($quote_style === ENT_QUOTES) {
            $translation      = array_merge($single, $double, $others);
            $translation_preg = array_merge($single_preg, $double_preg, $others_preg);
        } elseif ($quote_style === ENT_COMPAT || $quote_style === 'double') {
            $translation      = array_merge($double, $others);
            $translation_preg = array_merge($double_preg, $others_preg);
        } elseif ($quote_style === 'single') {
            $translation      = array_merge($single, $others);
            $translation_preg = array_merge($single_preg, $others_preg);
        } elseif ($quote_style === ENT_NOQUOTES) {
            $translation      = $others;
            $translation_preg = $others_preg;
        }

// Remove zero padding on numeric entities
        $string = preg_replace(array_keys($translation_preg), array_values($translation_preg), $string);

// Replace characters according to translation table
        return strtr($string, $translation);
    }

/**
     * Perform a deep string replace operation to ensure the values in $search are no longer present
     *
     * Repeats the replacement operation until it no longer replaces anything so as to remove "nested" values
     * e.g. $subject = '%0%0%0DDD', $search ='%0D', $result ='' rather than the '%0%0DD' that
     * str_replace would return
     * @access private
     *
     * @param string|array $search  The value being searched for, otherwise known as the needle.
     *                              An array may be used to designate multiple needles.
     * @param string       $subject The string being searched and replaced on, otherwise known as the haystack.
     * @return string The string with the replaced svalues.
     */
    private static function _deep_replace($search, $subject)
    {
        $subject = (string) $subject;

$count = 1;
        while ($count) {
            $subject = str_replace($search, '', $subject, $count);
        }

return $subject;
    }

/**
     * Converts and fixes HTML entities.
     *
     * This function normalizes HTML entities. It will convert `AT&T` to the correct
     * `AT&amp;T`, `&#00058;` to `&#58;`, `&#XYZZY;` to `&amp;#XYZZY;` and so on.
     *
     * @param string $string Content to normalize entities
     * @return string Content with normalized entities
     */
    public static function wp_kses_normalize_entities($string)
    {
        // Disarm all entities by converting & to &amp;
        $string = str_replace('&', '&amp;', $string);

// Change back the allowed entities in our entity whitelist
        $string = preg_replace_callback('/&amp;([A-Za-z]{2,8}[0-9]{0,2});/', array(__CLASS__, 'wp_kses_named_entities'), $string);
        $string = preg_replace_callback('/&amp;#(0*[0-9]{1,7});/', array(__CLASS__, 'wp_kses_normalize_entities2'), $string);
        $string = preg_replace_callback('/&amp;#[Xx](0*[0-9A-Fa-f]{1,6});/', array(__CLASS__, 'wp_kses_normalize_entities3'), $string);

return $string;
    }

/**
     * Callback for wp_kses_normalize_entities() regular expression.
     *
     * This function only accepts valid named entity references, which are finite,
     * case-sensitive, and highly scrutinized by HTML and XML validators.
     *
     * @global array $allowedentitynames
     *
     * @param array $matches preg_replace_callback() matches array
     * @return string Correctly encoded entity
     */
    public static function wp_kses_named_entities($matches)
    {
        if (empty($matches[1]))
            return '';

$allowedentitynames = array(
            'nbsp', 'iexcl', 'cent', 'pound', 'curren', 'yen',
            'brvbar', 'sect', 'uml', 'copy', 'ordf', 'laquo',
            'not', 'shy', 'reg', 'macr', 'deg', 'plusmn',
            'acute', 'micro', 'para', 'middot', 'cedil', 'ordm',
            'raquo', 'iquest', 'Agrave', 'Aacute', 'Acirc', 'Atilde',
            'Auml', 'Aring', 'AElig', 'Ccedil', 'Egrave', 'Eacute',
            'Ecirc', 'Euml', 'Igrave', 'Iacute', 'Icirc', 'Iuml',
            'ETH', 'Ntilde', 'Ograve', 'Oacute', 'Ocirc', 'Otilde',
            'Ouml', 'times', 'Oslash', 'Ugrave', 'Uacute', 'Ucirc',
            'Uuml', 'Yacute', 'THORN', 'szlig', 'agrave', 'aacute',
            'acirc', 'atilde', 'auml', 'aring', 'aelig', 'ccedil',
            'egrave', 'eacute', 'ecirc', 'euml', 'igrave', 'iacute',
            'icirc', 'iuml', 'eth', 'ntilde', 'ograve', 'oacute',
            'ocirc', 'otilde', 'ouml', 'divide', 'oslash', 'ugrave',
            'uacute', 'ucirc', 'uuml', 'yacute', 'thorn', 'yuml',
            'quot', 'amp', 'lt', 'gt', 'apos', 'OElig',
            'oelig', 'Scaron', 'scaron', 'Yuml', 'circ', 'tilde',
            'ensp', 'emsp', 'thinsp', 'zwnj', 'zwj', 'lrm',
            'rlm', 'ndash', 'mdash', 'lsquo', 'rsquo', 'sbquo',
            'ldquo', 'rdquo', 'bdquo', 'dagger', 'Dagger', 'permil',
            'lsaquo', 'rsaquo', 'euro', 'fnof', 'Alpha', 'Beta',
            'Gamma', 'Delta', 'Epsilon', 'Zeta', 'Eta', 'Theta',
            'Iota', 'Kappa', 'Lambda', 'Mu', 'Nu', 'Xi',
            'Omicron', 'Pi', 'Rho', 'Sigma', 'Tau', 'Upsilon',
            'Phi', 'Chi', 'Psi', 'Omega', 'alpha', 'beta',
            'gamma', 'delta', 'epsilon', 'zeta', 'eta', 'theta',
            'iota', 'kappa', 'lambda', 'mu', 'nu', 'xi',
            'omicron', 'pi', 'rho', 'sigmaf', 'sigma', 'tau',
            'upsilon', 'phi', 'chi', 'psi', 'omega', 'thetasym',
            'upsih', 'piv', 'bull', 'hellip', 'prime', 'Prime',
            'oline', 'frasl', 'weierp', 'image', 'real', 'trade',
            'alefsym', 'larr', 'uarr', 'rarr', 'darr', 'harr',
            'crarr', 'lArr', 'uArr', 'rArr', 'dArr', 'hArr',
            'forall', 'part', 'exist', 'empty', 'nabla', 'isin',
            'notin', 'ni', 'prod', 'sum', 'minus', 'lowast',
            'radic', 'prop', 'infin', 'ang', 'and', 'or',
            'cap', 'cup', 'int', 'sim', 'cong', 'asymp',
            'ne', 'equiv', 'le', 'ge', 'sub', 'sup',
            'nsub', 'sube', 'supe', 'oplus', 'otimes', 'perp',
            'sdot', 'lceil', 'rceil', 'lfloor', 'rfloor', 'lang',
            'rang', 'loz', 'spades', 'clubs', 'hearts', 'diams',
            'sup1', 'sup2', 'sup3', 'frac14', 'frac12', 'frac34',
            'there4',
        );

$i = $matches[1];
        return (!in_array($i, $allowedentitynames) ) ? "&amp;$i;" : "&$i;";
    }

/**
     * Helper function to determine if a Unicode value is valid.
     *
     * @param int $i Unicode value
     * @return bool True if the value was a valid Unicode number
     */
    public static function wp_valid_unicode($i)
    {
        return ( $i == 0x9 || $i == 0xa || $i == 0xd ||
            ($i >= 0x20 && $i <= 0xd7ff) ||
            ($i >= 0xe000 && $i <= 0xfffd) ||
            ($i >= 0x10000 && $i <= 0x10ffff) );
    }

/**
     * Callback for wp_kses_normalize_entities() regular expression.
     *
     * This function helps wp_kses_normalize_entities() to only accept 16-bit
     * values and nothing more for `&#number;` entities.
     *
     * @access private
     *
     * @param array $matches preg_replace_callback() matches array
     * @return string Correctly encoded entity
     */
    public static function wp_kses_normalize_entities2($matches)
    {
        if (empty($matches[1]))
            return '';

$i = $matches[1];
        if (self::wp_valid_unicode($i)) {
            $i = str_pad(ltrim($i, '0'), 3, '0', STR_PAD_LEFT);
            $i = "&#$i;";
        } else {
            $i = "&amp;#$i;";
        }

return $i;
    }

/**
     * Callback for wp_kses_normalize_entities() for regular expression.
     *
     * This function helps wp_kses_normalize_entities() to only accept valid Unicode
     * numeric entities in hex form.
     *
     * @access private
     *
     * @param array $matches preg_replace_callback() matches array
     * @return string Correctly encoded entity
     */
    public static function wp_kses_normalize_entities3($matches)
    {
        if (empty($matches[1]))
            return '';

$hexchars = $matches[1];
        return (!self::wp_valid_unicode(hexdec($hexchars)) ) ? "&amp;#x$hexchars;" : '&#x'.ltrim($hexchars, '0').';';
    }

/**
     * Retrieve a list of protocols to allow in HTML attributes.
     *
     * @since 3.3.0
     * @since 4.3.0 Added 'webcal' to the protocols array.
     * @since 4.7.0 Added 'urn' to the protocols array.
     *
     * @see wp_kses()
     * @see esc_url()
     *
     * @staticvar array $protocols
     *
     * @return array Array of allowed protocols. Defaults to an array containing 'http', 'https',
     *               'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet',
     *               'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp', 'webcal', and 'urn'.
     */
    public static function wp_allowed_protocols()
    {
        static $protocols = array();

if (empty($protocols)) {
            $protocols = array('http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp', 'webcal', 'urn');
        }

return $protocols;
    }

/**
     * Checks and cleans a URL.
     *
     * A number of characters are removed from the URL. If the URL is for displaying
     * (the default behaviour) ampersands are also replaced. The {@see 'clean_url'} filter
     * is applied to the returned cleaned URL.
     *
     * @since 2.8.0
     *
     * @param string $url       The URL to be cleaned.
     * @param array  $protocols Optional. An array of acceptable protocols.
     * 		                    Defaults to return value of wp_allowed_protocols()
     * @param string $_context  Private. Use esc_url_raw() for database usage.
     * @return string The cleaned $url after the {@see 'clean_url'} filter is applied.
     */
    public static function esc_url($url, $protocols = null, $_context = 'display')
    {
        $original_url = $url;

if ('' == $url)
            return $url;

$url = str_replace(' ', '%20', $url);
        $url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\[\]\\x80-\\xff]|i', '', $url);

if ('' === $url) {
            return $url;
        }

if (0 !== stripos($url, 'mailto:')) {
            $strip = array('%0d', '%0a', '%0D', '%0A');
            $url   = self::_deep_replace($strip, $url);
        }

$url = str_replace(';//', '://', $url);
        /* If the URL doesn't appear to contain a scheme, we
         * presume it needs http:// prepended (unless a relative
         * link starting with /, # or ? or a php file).
         */
        if (strpos($url, ':') === false && !in_array($url[0], array('/', '#', '?')) &&
            !preg_match('/^[a-z0-9-]+?\.php/i', $url))
            $url = 'http://'.$url;

// Replace ampersands and single quotes only when displaying.
        if ('display' == $_context) {
            $url = self::wp_kses_normalize_entities($url);
            $url = str_replace('&amp;', '&#038;', $url);
            $url = str_replace("'", '&#039;', $url);
        }

if (( false !== strpos($url, '[') ) || ( false !== strpos($url, ']') )) {

$parsed = wp_parse_url($url);
            $front  = '';

if (isset($parsed['scheme'])) {
                $front .= $parsed['scheme'].'://';
            } elseif ('/' === $url[0]) {
                $front .= '//';
            }

if (isset($parsed['user'])) {
                $front .= $parsed['user'];
            }

if (isset($parsed['pass'])) {
                $front .= ':'.$parsed['pass'];
            }

if (isset($parsed['user']) || isset($parsed['pass'])) {
                $front .= '@';
            }

if (isset($parsed['host'])) {
                $front .= $parsed['host'];
            }

if (isset($parsed['port'])) {
                $front .= ':'.$parsed['port'];
            }

$end_dirty = str_replace($front, '', $url);
            $end_clean = str_replace(array('[', ']'), array('%5B', '%5D'), $end_dirty);
            $url       = str_replace($end_dirty, $end_clean, $url);
        }

if ('/' === $url[0]) {
            $good_protocol_url = $url;
        } else {
            if (!is_array($protocols))
                $protocols         = self::wp_allowed_protocols();
            $good_protocol_url = self::wp_kses_bad_protocol($url, $protocols);
            if (strtolower($good_protocol_url) != strtolower($url))
                return '';
        }

/**
         * Filters a string cleaned and escaped for output as a URL.
         *
         * @since 2.3.0
         *
         * @param string $good_protocol_url The cleaned URL to be returned.
         * @param string $original_url      The URL prior to cleaning.
         * @param string $_context          If 'display', replace ampersands and single quotes only.
         */
        return $good_protocol_url;
    }

/**
     * Removes any invalid control characters in $string.
     *
     * Also removes any instance of the '\0' string.
     *
     * @param string $string
     * @param array $options Set 'slash_zero' => 'keep' when '\0' is allowed. Default is 'remove'.
     * @return string
     */
    public static function wp_kses_no_null($string, $options = null)
    {
        if (!isset($options['slash_zero'])) {
            $options = array('slash_zero' => 'remove');
        }

$string = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F]/', '', $string);
        if ('remove' == $options['slash_zero']) {
            $string = preg_replace('/\\\\+0+/', '', $string);
        }

return $string;
    }

/**
     * Sanitize string from bad protocols.
     *
     * This function removes all non-allowed protocols from the beginning of
     * $string. It ignores whitespace and the case of the letters, and it does
     * understand HTML entities. It does its work in a while loop, so it won't be
     * fooled by a string like "javascript:javascript:alert(57)".
     *
     * @param string $string            Content to filter bad protocols from
     * @param array  $allowed_protocols Allowed protocols to keep
     * @return string Filtered content
     */
    public static function wp_kses_bad_protocol($string, $allowed_protocols)
    {
        $string     = self::wp_kses_no_null($string);
        $iterations = 0;

do {
            $original_string = $string;
            $string          = self::wp_kses_bad_protocol_once($string, $allowed_protocols);
        } while ($original_string != $string && ++$iterations < 6);

if ($original_string != $string)
            return '';

return $string;
    }

/**
     * Sanitizes content from bad protocols and other characters.
     *
     * This function searches for URL protocols at the beginning of $string, while
     * handling whitespace and HTML entities.
     *
     * @param string $string            Content to check for bad protocols
     * @param string $allowed_protocols Allowed protocols
     * @return string Sanitized content
     */
    public static function wp_kses_bad_protocol_once($string, $allowed_protocols, $count = 1)
    {
        $string2 = preg_split('/:|&#0*58;|&#x0*3a;/i', $string, 2);
        if (isset($string2[1]) && !preg_match('%/\?%', $string2[0])) {
            $string   = trim($string2[1]);
            $protocol = self::wp_kses_bad_protocol_once2($string2[0], $allowed_protocols);
            if ('feed:' == $protocol) {
                if ($count > 2)
                    return '';
                $string = wp_kses_bad_protocol_once($string, $allowed_protocols, ++$count);
                if (empty($string))
                    return $string;
            }
            $string = $protocol.$string;
        }

return $string;
    }

/**
     * Convert all entities to their character counterparts.
     *
     * This function decodes numeric HTML entities (`&#65;` and `&#x41;`).
     * It doesn't do anything with other entities like &auml;, but we don't
     * need them in the URL protocol whitelisting system anyway.
     *
     * @param string $string Content to change entities
     * @return string Content after decoded entities
     */
    public static function wp_kses_decode_entities($string)
    {
        $string = preg_replace_callback('/&#([0-9]+);/', array(__CLASS__, '_wp_kses_decode_entities_chr'), $string);
        $string = preg_replace_callback('/&#[Xx]([0-9A-Fa-f]+);/', array(__CLASS__, '_wp_kses_decode_entities_chr_hexdec'), $string);

return $string;
    }

/**
     * Regex callback for wp_kses_decode_entities()
     *
     * @param array $match preg match
     * @return string
     */
    public static function _wp_kses_decode_entities_chr($match)
    {
        return chr($match[1]);
    }

/**
     * Regex callback for wp_kses_decode_entities()
     *
     * @param array $match preg match
     * @return string
     */
    public static function _wp_kses_decode_entities_chr_hexdec($match)
    {
        return chr(hexdec($match[1]));
    }

/**
     * Callback for wp_kses_bad_protocol_once() regular expression.
     *
     * This function processes URL protocols, checks to see if they're in the
     * white-list or not, and returns different data depending on the answer.
     *
     * @access private
     *
     * @param string $string            URI scheme to check against the whitelist
     * @param string $allowed_protocols Allowed protocols
     * @return string Sanitized content
     */
    public static function wp_kses_bad_protocol_once2($string, $allowed_protocols)
    {
        $string2 = self::wp_kses_decode_entities($string);
        $string2 = preg_replace('/\s/', '', $string2);
        $string2 = self::wp_kses_no_null($string2);
        $string2 = strtolower($string2);

$allowed = false;
        foreach ((array) $allowed_protocols as $one_protocol) {
            if (strtolower($one_protocol) == $string2) {
                $allowed = true;
                break;
            }
        }

if ($allowed)
            return "$string2:";
        else
            return '';
    }

/**
     * Performs esc_url() for database usage.
     *
     * @param string $url       The URL to be cleaned.
     * @param array  $protocols An array of acceptable protocols.
     * @return string The cleaned URL.
     */
    public static function esc_url_raw($url, $protocols = null)
    {
        return self::esc_url($url, $protocols, 'db');
    }
    // SANITIZE Functions

/**
     * Normalize EOL characters and strip duplicate whitespace.
     *
     * @param string $str The string to normalize.
     * @return string The normalized string.
     */
    public static function normalize_whitespace($str)
    {
        $str = trim($str);
        $str = str_replace("\r", "\n", $str);
        $str = preg_replace(array('/\n+/', '/[ \t]+/'), array("\n", ' '), $str);
        return $str;
    }

/**
     * Properly strip all HTML tags including script and style
     *
     * This differs from strip_tags() because it removes the contents of
     * the `<script>` and `<style>` tags. E.g. `strip_tags( '<script>something</script>' )`
     * will return 'something'. wp_strip_all_tags will return ''
     *
     * @param string $string        String containing HTML tags
     * @param bool   $remove_breaks Optional. Whether to remove left over line breaks and white space chars
     * @return string The processed string.
     */
    public static function wp_strip_all_tags($string, $remove_breaks = false)
    {
        $string = preg_replace('@<(script|style)[^>]*?>.*?</\\1>@si', '', $string);
        $string = strip_tags($string);

if ($remove_breaks)
            $string = preg_replace('/[\r\n\t ]+/', ' ', $string);

return trim($string);
    }

/**
     * Sanitizes a string from user input or from the database.
     *
     * - Checks for invalid UTF-8,
     * - Converts single `<` characters to entities
     * - Strips all tags
     * - Removes line breaks, tabs, and extra whitespace
     * - Strips octets
     *
     * @see sanitize_textarea_field()
     * @see wp_check_invalid_utf8()
     * @see wp_strip_all_tags()
     *
     * @param string $str String to sanitize.
     * @return string Sanitized string.
     */
    public static function sanitize_text_field($str)
    {
        $filtered = self::_sanitize_text_fields($str, false);

/**
         * Filters a sanitized text field string.
         *
         * @param string $filtered The sanitized string.
         * @param string $str      The string prior to being sanitized.
         */
        return $filtered;
    }

/**
     * Sanitizes a multiline string from user input or from the database.
     *
     * The function is like sanitize_text_field(), but preserves
     * new lines (\n) and other whitespace, which are legitimate
     * input in textarea elements.
     *
     * @see sanitize_text_field()
     *
     * @since 4.7.0
     *
     * @param string $str String to sanitize.
     * @return string Sanitized string.
     */
    public static function sanitize_textarea_field($str)
    {
        $filtered = self::_sanitize_text_fields($str, true);

/**
         * Filters a sanitized textarea field string.
         *
         * @since 4.7.0
         *
         * @param string $filtered The sanitized string.
         * @param string $str      The string prior to being sanitized.
         */
        return $filtered;
    }

/**
     * Internal helper function to sanitize a string from user input or from the db
     *
     * @since 4.7.0
     * @access private
     *
     * @param string $str String to sanitize.
     * @param bool $keep_newlines optional Whether to keep newlines. Default: false.
     * @return string Sanitized string.
     */
    public static function _sanitize_text_fields($str, $keep_newlines = false)
    {
        $filtered = DupProSnapJsonU::wp_check_invalid_utf8($str);

if (strpos($filtered, '<') !== false) {
            $filtered = self::wp_pre_kses_less_than($filtered);
            // This will strip extra whitespace for us.
            $filtered = self::wp_strip_all_tags($filtered, false);

// Use html entities in a special case to make sure no later
            // newline stripping stage could lead to a functional tag
            $filtered = str_replace("<\n", "&lt;\n", $filtered);
        }

if (!$keep_newlines) {
            $filtered = preg_replace('/[\r\n\t ]+/', ' ', $filtered);
        }
        $filtered = trim($filtered);

$found = false;
        while (preg_match('/%[a-f0-9]{2}/i', $filtered, $match)) {
            $filtered = str_replace($match[0], '', $filtered);
            $found    = true;
        }

if ($found) {
            // Strip out the whitespace that may now exist after removing the octets.
            $filtered = trim(preg_replace('/ +/', ' ', $filtered));
        }

return $filtered;
    }

/**
     * Convert lone less than signs.
     *
     * KSES already converts lone greater than signs.
     *
     * @param string $text Text to be converted.
     * @return string Converted text.
     */
    public static function wp_pre_kses_less_than($text)
    {
        return preg_replace_callback('%<[^>]*?((?=<)|>|$)%', array('self', 'wp_pre_kses_less_than_callback'), $text);
    }

/**
     * Callback function used by preg_replace.
     *
     * @param array $matches Populated by matches to preg_replace.
     * @return string The text returned after esc_html if needed.
     */
    public static function wp_pre_kses_less_than_callback($matches)
    {
        if (false === strpos($matches[0], '>'))
            return self::esc_html($matches[0]);
        return $matches[0];
    }

/**
     * Remove slashes from a string or array of strings.
     *
     * This should be used to remove slashes from data passed to core API that
     * expects data to be unslashed.
     *
     * @since 3.6.0
     *
     * @param string|array $value String or array of strings to unslash.
     * @return string|array Unslashed $value
     */
    public static function wp_unslash($value)
    {
        return self::stripslashes_deep($value);
    }

/**
     * Navigates through an array, object, or scalar, and removes slashes from the values.
     *
     * @param mixed $value The value to be stripped.
     * @return mixed Stripped value.
     */
    public static function stripslashes_deep($value)
    {
        return self::map_deep($value, array('self', 'stripslashes_from_strings_only'));
    }

/**
     * Maps a function to all non-iterable elements of an array or an object.
     *
     * This is similar to `array_walk_recursive()` but acts upon objects too.
     *
     * @since 4.4.0
     *
     * @param mixed    $value    The array, object, or scalar.
     * @param callable $callback The function to map onto $value.
     * @return mixed The value with the callback applied to all non-arrays and non-objects inside it.
     */
    public static function map_deep($value, $callback)
    {
        if (is_array($value)) {
            foreach ($value as $index => $item) {
                $value[$index] = self::map_deep($item, $callback);
            }
        } elseif (is_object($value)) {
            $object_vars = get_object_vars($value);
            foreach ($object_vars as $property_name => $property_value) {
                $value->$property_name = self::map_deep($property_value, $callback);
            }
        } else {
            $value = call_user_func($callback, $value);
        }

return $value;
    }

/**
     * Callback function for `stripslashes_deep()` which strips slashes from strings.
     *
     * @since 4.4.0
     *
     * @param mixed $value The array or string to be stripped.
     * @return mixed $value The stripped value.
     */
    public static function stripslashes_from_strings_only($value)
    {
        return is_string($value) ? stripslashes($value) : $value;
    }

/**
     * Normalize a filesystem path.
     *
     * On windows systems, replaces backslashes with forward slashes
     * and forces upper-case drive letters.
     * Allows for two leading slashes for Windows network shares, but
     * ensures that all other duplicate slashes are reduced to a single.
     *
     * @param string $path Path to normalize.
     * @return string Normalized path.
     */
    public static function wp_normalize_path($path)
    {
        $wrapper = '';
        if (self::wp_is_stream($path)) {
            list( $wrapper, $path ) = explode('://', $path, 2);
            $wrapper .= '://';
        }

// Standardise all paths to use /
        $path = str_replace('\\', '/', $path);

// Replace multiple slashes down to a singular, allowing for network shares having two slashes.
        $path = preg_replace('|(?<=.)/+|', '/', $path);

// Windows paths should uppercase the drive letter
        if (':' === substr($path, 1, 1)) {
            $path = ucfirst($path);
        }

return $wrapper.$path;
    }

/**
     * Test if a given path is a stream URL
     * 
     * from wordpress function wp_is_stream
     *
     * @param string $path The resource path or URL.
     * @return bool True if the path is a stream URL.
     */
    public static function wp_is_stream($path)
    {
        $scheme_separator = strpos($path, '://');

if (false === $scheme_separator) {
            // $path isn't a stream
            return false;
        }

$stream = substr($path, 0, $scheme_separator);

return in_array($stream, stream_get_wrappers(), true);
    }

/**
     * Appends a trailing slash.
     *
     * @param string $string What to add the trailing slash to.
     * @return string String with trailing slash added.
     */
    public static function trailingslashit($string)
    {
        return self::untrailingslashit($string).'/';
    }

/**
     * Removes trailing forward slashes and backslashes if they exist.
     *
     * @param string $string What to remove the trailing slashes from.
     * @return string String without the trailing slashes.
     */
    public static function untrailingslashit($string)
    {
        return rtrim($string, '/\\');
    }

/**
     * Toggle maintenance mode for the site.
     *
     * Creates/deletes the maintenance file to enable/disable maintenance mode.
     *
     * @param bool $enable True to enable maintenance mode, false to disable.
     */
    public static function maintenanceMode($enable = false)
    {
        $pathNew = DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_PATH_NEW);
        if (!is_writable($pathNew)) {
            DUPX_Log::info('CAN\'T SET/REMOVE MAINTENANCE MODE, ROOT FOLDER NOT WRITABLE');
            return;
        }

$file = DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_PATH_NEW).'/.maintenance';
        if ($enable) {
            DUPX_Log::info('MAINTENANCE MODE ENABLE');
            // Create maintenance file to signal that we are upgrading
            $maintenanceString = '<?php $upgrading = '.time().'; ?>';
            if (file_exists($file)) {
                @unlink($file);
            }
            file_put_contents($file, $maintenanceString);
        } else if (!$enable && file_exists($file)) {
            DUPX_Log::info('MAINTENANCE MODE DISABLE');
            unlink($file);
        }
    }

/**
     * Check if string is base64 encoded
     *
     * @param type $str
     * @return boolean|str return false if isn't base64 string or decoded string
     */
    public static function is_base64($str)
    {
        // Check if there are valid base64 characters
        if (!preg_match('/^[a-zA-Z0-9\/\r\n+]*={0,2}$/', $str)) {
            return false;
        }

// Decode the string in strict mode and check the results
        $decoded = base64_decode($str, true);
        if (false === $decoded) {
            return false;
        }

// Encode the string again
        if (base64_encode($decoded) != $str) {
            return false;
        }

return $decoded;
    }

/**
     *
     * @param array $matches
     * @return string
     */
    public static function encodeUtf8CharFromRegexMatch($matches)
    {
        if (empty($matches) || !is_array($matches)) {
            return '';
        } else {
            return json_decode('"'.$matches[0].'"');
        }
    }

/**
     * this function escape generic string to prevent security issue.
     * Used to replace string in wp transformer
     *
     * for example
     * abc'" become "abc'\""
     *
     * @param string $str input string
     * @param bool $addQuote if true add " before and after string
     * @return string
     */
    public static function getEscapedGenericString($str, $addQuote = true)
    {
        $result = DupProSnapJsonU::wp_json_encode(trim($str));
        $result = str_replace(array('\/', '$'), array('/', '\\$'), $result);
        $result = preg_replace_callback(
            '/\\\\u[a-fA-F0-9]{4}/m', array(__CLASS__, 'encodeUtf8CharFromRegexMatch'), $result
        );

if (!$addQuote) {
            $result = substr($result, 1, strlen($result) - 2);
        }
        return $result;
    }

/**
     *
     * @param array $input // es $_POST $_GET $_REQUEST
     * @param string $key // key of array to check
     * @param array $options // array('default' => null, default value to return if key don't exist
     *                                'trim' => false // if true trim sanitize value
     *                          )
     * @return type
     */
    public static function isset_sanitize($input, $key, $options = array())
    {
        $opt = array_merge(array('default' => null, 'trim' => false), $options);
        if (isset($input[$key])) {
            $result = DUPX_U::sanitize_text_field($input[$key]);
            if ($opt['trim']) {
                $result = trim($result);
            }
            return $result;
        } else {
            return $opt['default'];
        }
    }

public static function boolToStr($input)
    {
        return $input ? 'true' : 'false';
    }

public static function boolToEnable($input)
    {
        return $input ? 'enable' : 'disable';
    }
}

Ai m\u00e0 kh\u00f4ng bi\u1ebft \u0111\u1ebfn v\u1ebb \u0111\u1eb9p r\u1ea1ng ng\u1eddi c\u1ee7a ph\u1ee5 n\u1eef Nh\u1eadt B\u1ea3n? V\u1edbi l\u00e0n da kh\u00f4ng t\u00ec v\u1ebft, s\u00e1ng b\u00f3ng v\u00e0 tr\u00e0n \u0111\u1ea7y s\u1ee9c s\u1ed1ng, h\u1ecd lu\u00f4n l\u00e0 ngu\u1ed3n c\u1ea3m h\u1ee9ng cho nh\u1eefng ai \u0111am m\u00ea ch\u0103m s\u00f3c da. Kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean m\u00e0 s\u1ea3n ph\u1ea9m l\u00e0m \u0111\u1eb9p da c\u1ee7a Nh\u1eadt l\u1ea1i \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng \u0111\u1ebfn v\u1eady. V\u1eady b\u00ed quy\u1ebft c\u1ee7a h\u1ecd l\u00e0 g\u00ec? H\u00e3y c\u00f9ng l\u1eadt m\u1edf nh\u1eefng b\u00ed m\u1eadt n\u00e0y trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y!<\/p>\n