怎么才可以得到“你”这个字,是截取吗?

怎么才可以得到“你”这个字,是截取吗?

function unescape($str) {
  $str = rawurldecode($str);
  preg_match_all("/(?:%u.{4})|&#x.{4};|&#\d+;|.+/U",$str,$r);
  $ar = $r[0];
print_r($ar);
  foreach($ar as $k=>$v) {
    if(substr($v,0,2) == "%u")
      $ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,-4)));
    elseif(substr($v,0,3) == "&#x")
      $ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,3,-1)));
    elseif(substr($v,0,2) == "&#") {
echo substr($v,2,-1)."<br>";
      $ar[$k] = iconv("UCS-2","GB2312",pack("n",substr($v,2,-1)));
    }
  }
  return join("",$ar);
}

$str = "%u4F60 ";
echo unescape($str);

得到的结果是:

Array ( [0] => %u4F60 ) 你                     怎么才可以得到“你”这个字,其他的Array ( [0] => %u4F60 ) 都不要?

去掉 print_r

[复制到剪切板]
CODE:
function unescape($str) {
  
$str rawurldecode($str);
  
preg_match_all("/(?:%u.{4})|&#x.{4};|&#\d+;|.+/U",$str,$r);
  
$ar $r[0];
//print_r($ar);
  
foreach($ar as $k=>$v) {
    if(
substr($v,0,2) == "%u")
      
$ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,-4)));
    elseif(
substr($v,0,3) == "&#x")
      
$ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,3,-1)));
    elseif(
substr($v,0,2) == "&#") {
//echo substr($v,2,-1)."<br>";
      
$ar[$k] = iconv("UCS-2","GB2312",pack("n",substr($v,2,-1)));
    }
  }
  return 
join("",$ar);
}

$str "%u4F60 ";
echo 
unescape($str); ;

如履薄冰