php根據新浪淘寶ip 獲取json數據的處理數組的方法

利用新浪或者淘寶開放api調用ip獲取地理位置的時候返回數據是以json形式展現的。但是怎麼才能 把這些文件成功賦值給某一變量呢？

1. 返回數據如下 {"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5317","area_id":"100000","region":"\u5317\u4eac\u5e02","region_id":"110000","city":"\u5317\u4eac\u5e02","city_id":"110100","county":"","county_id":"-1","isp":"\u8054\u901a","isp_id":"100026","ip":"123.123.123.123"}}  
2.   
3. 但是怎麼才能 把這些文件成功賦值給某一變量呢？  
4. \u4e2d\u56fd 這種怎麼進行轉碼呢？  
5. 代碼如下  
6.   
7. $ip="123.123.123.123";  
8. //獲取api的數據病賦值、$res  
9. $res = @file_get_contents('http://ip.taobao.com/service/getIpInfo.php?ip='.$ip);  
10.   
11. //接收的值如下   
12. //{"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5317","area_id":"100000","region":"\u5317\u4eac\u5e02","region_id":"110000","city":"\u5317\u4eac\u5e02","city_id":"110100","county":"","county_id":"-1","isp":"\u8054\u901a","isp_id":"100026","ip":"123.123.123.123"}}  
13.   
14.   
15. 進行數據轉換   
16.   
17. $json=preg_replace("#\\\u([0-9a-f]{4})#ie", "iconv('UCS-2BE', 'UTF-8', pack('H4', '\\1'))", $res);  
18.   
19. //轉換完成以後的代碼如下   
20.   
21. {"code":0,"data":{"country":"中國","country_id":"CN","area":"華北","area_id":"100000","region":"北京市","region_i