<?     function phpescape($str)  {           $sublen=strlen($str);           $retrunString="";           for ($i=0;$i<$sublen;$i++)           {                    if(ord($str[$i])>=127)                    {                             $tmpString=bin2hex(iconv("gb2312","ucs-2",substr($str,$i,2)));                             //$tmpString=substr($tmpString,2,2).substr($tmpString,0,2);window下可能要打开此项                             $retrunString.="%u".$tmpString;                             $i++;                    } else {                             $retrunString.="%".dechex(ord($str[$i]));                    }           }           return $retrunString;  }   function unescape($str) {           $str = rawurldecode($str);           preg_match_all("/%u.{4}|&#x.{4};|&#\d+;|.+/U",$str,$r);           $ar = $r[0];           foreach($ar as $k=>$v) {                    if(substr($v,0,2) == "%u")                             $ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,-4)));                    elseif(substr($v,0,3) == "&#x")                             $ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,3,-1)));                    elseif(substr($v,0,2) == "&#") {                             $ar[$k] = iconv("UCS-2","GBK",pack("n",substr($v,2,-1)));                    }           }           return join("",$ar);  }     ?>