Cookie使用的一个小实例

Sian

1、先看效果





2、几个页面
A、cookie.php   B、login.php   C、logout.php   D、index.php

3、部分代码
cookie.php

[PHP] 纯文本查看 复制代码

<?php
header('Content-Type:text/html;charset:utf-8');
if (!(isset($_COOKIE['isLogin']) && $_COOKIE['isLogin'] == 1)){
echo "请先登录<br/>";
echo '<script>setTimeout(\'location="login.php"\', 3000);</script>';
}

login.php

[PHP] 纯文本查看 复制代码

<?php
if(isset($_POST['dosubmit'])){
$pdo = new PDO("mysql:host=localhost;dbname=think", "root", "*****");
$statement = $pdo->prepare("select id, username, allow_1, allow_2, allow_3 from user where username = ? and password = ?");
$statement->execute(array($_POST['username'], md5($_POST['password'])));

if ($result = $statement->fetch(PDO::FETCH_ASSOC)){
$time = time()+24*60*60;
setcookie("uid", $result['id'], $time);
setcookie("username", $result['username'], $time);
setcookie("allow_1", $result['allow_1'], $time);
setcookie("allow_2", $result['allow_2'], $time);
setcookie("allow_3", $result['allow_3'], $time);
setcookie("isLogin", "1", $time);

header("Location:index.php");
}else{
echo "登录失败！<br/>";
}
}        
?>
<h3>用户登录</h3>
<form action="" method="post">
username：<input type="text" name="username" value=""/><br/>
password：<input type="password" name="password" value="" /><br/>

<input type="submit" name="dosubmit" value="登录" /><br/>
</form>

index.php

[PHP] 纯文本查看 复制代码

<?php
include 'cookie.php';

echo "{$_COOKIE['username']}你好！欢迎来到首页！, <a href='logout.php'>退出</a><br/>";
if (isset($_COOKIE['allow_1']) && $_COOKIE['allow_1'] == 1) echo "你有1的权限<br/>";
if (isset($_COOKIE['allow_2']) && $_COOKIE['allow_2'] == 1) echo "你有2的权限<br/>";
if (isset($_COOKIE['allow_3']) && $_COOKIE['allow_3'] == 1) echo "你有3的权限<br/>";

logout.php

[PHP] 纯文本查看 复制代码

<?php
$username = $_COOKIE['username'];

setcookie("id", "", time()-3600, "/");
setcookie("username", "", time()-3600, "/");
setcookie("allow_1", "", time()-3600, "/");
setcookie("allow_2", "", time()-3600, "/");
setcookie("allow_3", "", time()-3600, "/");
setcookie("isLogin", "", time()-3600, "/");

echo "再见！{$username}";

echo '<script>setTimeout(\'location="login.php"\', 3000);</script>';