thinkueditor 1.4.3.1 seems to be unable to render the following PHP syntax highlighting?

Select php through syntax in UEditor and publish it to the web page. The following php code cannot be highlighted correctly. Who can find out the most fundamental problem?

Ueditor goes to ‘Decrypt String’, * @return strin is wrong. . . . I can’t even get out the last g

<code><?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Crypt\Driver;
/**
 * Crypt 加密实现类
 * @category   ORG
 * @package  ORG
 * @subpackage  Crypt
 * @author    liu21st <liu21st@gmail.com>
 */
class Crypt {

    /**
     * 加密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @param integer $expire 有效期（秒）     
     * @return string
     */
    public static function encrypt($str,$key,$expire=0){
        $expire = sprintf('%010d', $expire ? $expire + time():0);
        $r = md5($key);
        $c=0;
        $v = "";
        $str    =   $expire.$str;
        $len = strlen($str);
        $l = strlen($r);
        for ($i=0;$i<$len;$i++){
         if ($c== $l) $c=0;
         $v.= substr($r,$c,1) .
             (substr($str,$i,1) ^ substr($r,$c,1));
         $c++;
        }
        return self::ed($v,$key);
    }

    /**
     * 解密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @return string
     */
    public static function decrypt($str,$key) {
        $str = self::ed($str,$key);
        $v = "";
        $len = strlen($str);
        for ($i=0;$i<$len;$i++){
         $md5 = substr($str,$i,1);
         $i++;
         $v.= (substr($str,$i,1) ^ $md5);
        }
        $data   =    $v;
        $expire = substr($data,0,10);
        if($expire > 0 && $expire < time()) {
            return '';
        }
        $data   = substr($data,10);
        return $data;
    }


   function ed($str,$key) {
      $r = md5($key);
      $c=0;
      $v = "";
      $len = strlen($str);
      $l = strlen($r);
      for ($i=0;$i<$len;$i++) {
         if ($c==$l) $c=0;
         $v.= substr($str,$i,1) ^ substr($r,$c,1);
         $c++;
      }
      return $v;
   }
}</code>

Reply content:

Select php through syntax in UEditor and publish it to the web page. The following php code cannot be highlighted correctly. Who can find out the most fundamental problem?

Ueditor goes to ‘Decrypt String’, * @return strin is wrong. . . . I can’t even get out the last g

<code><?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Crypt\Driver;
/**
 * Crypt 加密实现类
 * @category   ORG
 * @package  ORG
 * @subpackage  Crypt
 * @author    liu21st <liu21st@gmail.com>
 */
class Crypt {

    /**
     * 加密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @param integer $expire 有效期（秒）     
     * @return string
     */
    public static function encrypt($str,$key,$expire=0){
        $expire = sprintf('%010d', $expire ? $expire + time():0);
        $r = md5($key);
        $c=0;
        $v = "";
        $str    =   $expire.$str;
        $len = strlen($str);
        $l = strlen($r);
        for ($i=0;$i<$len;$i++){
         if ($c== $l) $c=0;
         $v.= substr($r,$c,1) .
             (substr($str,$i,1) ^ substr($r,$c,1));
         $c++;
        }
        return self::ed($v,$key);
    }

    /**
     * 解密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @return string
     */
    public static function decrypt($str,$key) {
        $str = self::ed($str,$key);
        $v = "";
        $len = strlen($str);
        for ($i=0;$i<$len;$i++){
         $md5 = substr($str,$i,1);
         $i++;
         $v.= (substr($str,$i,1) ^ $md5);
        }
        $data   =    $v;
        $expire = substr($data,0,10);
        if($expire > 0 && $expire < time()) {
            return '';
        }
        $data   = substr($data,10);
        return $data;
    }


   function ed($str,$key) {
      $r = md5($key);
      $c=0;
      $v = "";
      $len = strlen($str);
      $l = strlen($r);
      for ($i=0;$i<$len;$i++) {
         if ($c==$l) $c=0;
         $v.= substr($str,$i,1) ^ substr($r,$c,1);
         $c++;
      }
      return $v;
   }
}</code>