导读php session 检测和注销: 代码如下:<php session_start(); $_SESSION['username']=zhuzhao; > 代码如下:<php session_start(); unset($_SESSION['username']); if(isset($_SESSION['username'])) echo usern
代码如下:
<?php
session_start();
$_SESSION['username']="zhuzhao";
?>
代码如下:
<?php
session_start();
unset($_SESSION['username']);
if(isset($_SESSION['username']))
echo "username已经存在";
else
echo "username不存在";
?>
