<?php
//开始使用session
session_start();
//设置一个session
$_SESSION['test'] = time();
//显示当前的session_id
echo "session_id:".session_id();
echo "<br>";
//读取session值
echo $_SESSION['test'];
//销毁一个session
unset($_SESSION['test']);
echo "<br>";
var_dump($_SESSION);

session