PHPでJson中国語を処理する方法

<?php
  header("Content-type:text/html;charset=utf-8");
  $arrayName = array(&#39;city&#39; => &#39;广东&#39;,&#39;goods&#39;=>&#39;cookies&#39; );
  $arr = json_encode($arrayName);
  echo $arr."</br>";
  var_dump(json_decode($arr));
  echo "</br>";
  echo urldecode(json_encode(ch_json($arrayName)))."</br>";
/*
  需要php版本在5.4以上
  echo json_encode($arrayName,JSON_UNESCAPED_UNICODE);
*/
  function ch_json($arr){
    if(is_array($arr)){
      foreach ($arr as $key => $value) {
        $arr[urlencode($key)] = ch_json($value);
      }
    }else{
      return urlencode($arr);
    }
    return $arr;
  }
?>