json字符串，中文Unicode编码，PHP解析问题，谢谢！

Question

http://ip.taobao.com/instruct...

接口返回这样的数据，

{"code":0,"data":{"ip":"210.75.225.254","country":"\u4e2d\u56fd","area":"\u534e\u5317",
"region":"\u5317\u4eac\u5e02","city":"\u5317\u4eac\u5e02","county":"","isp":"\u7535\u4fe1",
"country_id":"86","area_id":"100000","region_id":"110000","city_id":"110000",
"county_id":"-1","isp_id":"100017"}}

类似这样的

"region":"\u5317\u4eac\u5e02","city":"\u5317\u4eac\u5e02"

php怎么解析出来正确的汉字呢？
谢谢！

Answer 1

var_dump(json_decode('{"code":0,"data":{"ip":"210.75.225.254","country":"\u4e2d\u56fd","area":"\u534e\u5317",
"region":"\u5317\u4eac\u5e02","city":"\u5317\u4eac\u5e02","county":"","isp":"\u7535\u4fe1",
"country_id":"86","area_id":"100000","region_id":"110000","city_id":"110000",
"county_id":"-1","isp_id":"100017"}}'));

Answer 2

function unicodeDecode($str){
  $json = '{"str":"'.$str.'"}';
  $arr = json_decode($json,true);
  if(empty($arr)) return ''; 
  return $arr['str'];
}

Answer 3

解决办法：
首先自定义一个函数，处理接到接口的数据，将所有Unicode编码的替换为utf8，

function decodeUnicode($str)
    {
        return preg_replace_callback('/\\\\u([0-9a-f]{4})/i',
            create_function(
                '$matches',
                'return mb_convert_encoding(pack("H*", $matches[1]), "UTF-8", "UCS-2BE");'
            ),
            $str);
    }

PHP接口获取数据后，先执行这个函数，替换后，再执行 json_decode($str, true),这样直接可以把接口数据转化为数组了

Answer 4

json_decode($json,true);