php json的相关操作

<?php 
class userinfo
{
    var $user_name;
    var $user_ip;
    var $user_logintime;
}
?>

<?php
$u = new userinfo();
$u->user_name = $get_usernaeme;
$u->user_logintime = time();
$u->user_ip = IP();
$strjson = serialize($u);  //序列化为字符串json

$a = new userinfo(); //必须“重新加载”并且“重新实例化”一个类，否则会报错 
$a = unserialize($strjson); //反序列化为类 
?>

<php 
    $arr = array("Msg" => $Msg,"Result" => $Result,"Status" => $Status);
    $strjson = json_encode($arr);      //将数组序列化为字符串json　　
　　 $arrjson = json_decode($strjson); //将字符串反序列化为数组
?>