【PHP】PHP 中的 unescape 函式

   function phpescape($str){

    $sublen=strlen($str);

    $reString="";

    for ($i=0;$i<$sublen;$i++){

        if(ord($str[$i])>=127){

            $tmpString=bin2hex(iconv("utf-8","ucs-2",substr($str,$i,2)));    



            if (!eregi("WIN",PHP_OS)){

                $tmpString=substr($tmpString,2,2).substr($tmpString,0,2);

            }

            $reString.="%u".$tmpString;

            $i++;

        } else {

            $reString.="%".dechex(ord($str[$i]));

        }

    }

    return $reString;

}





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","utf-8",pack("H4",substr($v,-4))); 

                  elseif(substr($v,0,3) == "&#x") 

                           $ar[$k] = iconv("UCS-2","utf-8",pack("H4",substr($v,3,-1))); 

                  elseif(substr($v,0,2) == "&#") { 

                           $ar[$k] = iconv("UCS-2","utf-8",pack("n",substr($v,2,-1))); 

                  } 

         } 

         return join("",$ar); 

} 







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