%u811a%u672c 这样的中文转换过来的字符，应该用什么函数实现？

Question

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);
}echo unescape("%u811a%u672c%u8bed%u8a00%uff08Perl%uff0c");测试通过 结果为Perl

Answer 1

escape 是 javascript 的，不是php的