php正确解码javascript中通过escape编码后的字符

js的escape如何在PHP中来解呢?

下面的这个函数可以正确的解析,网上有不少unescape的函数,但好用的不多.

这是很久以前收集的一个,不知道谁写的了,但经过测试没有问题~

function phpUnescape($escstr)   
    {   
        preg_match_all("/%u[0-9A-Za-z]{4}|%.{2}|[0-9a-zA-Z.+-_]+/", $escstr, $matches);   
        $ar = &$matches[0];   
        $c = "";   
        foreach($ar as $val)   
        {   
            if (substr($val, 0, 1) != "%")   
            {   
                $c .= $val;   
            } elseif (substr($val, 1, 1) != "u")   
            {   
                $x = hexdec(substr($val, 1, 2));   
                $c .= chr($x);   
            }    
            else  
            {   
                $val = intval(substr($val, 2), 16);   
                if ($val < 0x7F) // 0000-007F   
                {   
                    $c .= chr($val);   
                } elseif ($val < 0x800) // 0080-0800   
                {   
                    $c .= chr(0xC0 | ($val / 64));   
                    $c .= chr(0x80 | ($val % 64));   
                }    
                else // 0800-FFFF   
                {   
                    $c .= chr(0xE0 | (($val / 64) / 64));   
                    $c .= chr(0x80 | (($val / 64) % 64));   
                    $c .= chr(0x80 | ($val % 64));   
                }    
            }    
        }    
      
        return $c;   
    }  

escape编码后:

%u6D4B%u8BD5www.abc.com%22%22%27%27%3C%3E%26%26

解码后:

测试www.abc.com""''<>&&

http://www.koyoz.com/blog/?action=show&id=207