1、http://pear.php.net/package/Services_JSON/download

2、

1. if(!function_exists(‘json_encode’))
2. {
3.     include(‘JSON.php’);
4.     function json_encode($val)
5.     {
6.         $json = new Services_JSON();
7.         return $json->encode($val);
8.     }
10.     function json_decode($val)
11.     {
12.         $json = new Services_JSON();
13.         return $json->decode($val);
14.     }
15. }

出處 http://www.pcschool.com.tw/campus/share/lib/157/