PHP会话控制实例代码与详细分析
本文实例讲述了PHP会话控制。分享给大家供大家参考，具体如下：
关于cookie和session的测试代码：
- <?php
- session_start();
- define('u','a');
- define('p','1');
- if(isset($_GET['r']) &&$_GET['r']== 1) {
- unset($_COOKIE['username']);
- unset($_COOKIE['password']);
- unset($_SESSION['valid_login']);
- }
- if(isset($_POST['username']) && isset($_POST['password'])) {
- $username=$_POST['username'];
- $password=$_POST['password'];
- if($username== u &&$password== p) {
- $_SESSION['valid_login'] = 1;
- setcookie('username',$username);
- setcookie('password',$password);
- }else{
- echo'incorrect u or p';
- }
- }
- ?>
- <?php
- if(isset($_SESSION['valid_login'])) {
- printf('welcom, %s',$_COOKIE['username']);
- }else{
- ?>
- <form action=""method="post">
- <input type="text"name="username"value=""/>
- <input type="password"name="password"value=""/>
- <input type="submit"/>
- </form>
- <?php
- }
- ?>
- <br />
- <a href="cookie_session.php"title="">refresh</a>
- <br />
- <a href="cookie_session.php?r=1"title="">clear</a>