1.cookie与session
发送cookie
setcookie ( string $name [, string $value = "" [, int $expire = 0 [, string $path = ""设置setcookie('user',serialize(array_pop($result)),time()+3600);删除setcookie('user',null,time()-60);
session用法
//开始会话session_start();//销毁会话session_destroy();
用户首页
<!DOCTYPE html><html lang="en"><?phpif (isset($_COOKIE['user'])) $user=unserialize($_COOKIE['user']);?><?php//session用法//session_start();//if (isset($_SESSION['user'])) $user=unserialize($_SESSION['user']);?><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>首页</title><link rel="stylesheet" href="css/style.css"></head><body><nav><a href="">我的首页</a><?php if(isset($_COOKIE['user'])):?>//session的用法//<?php if(isset($_SESSION['user'])):?><a href="" id=logout><span style="color: red"><?php echo $user['username'] ?></span>退出</a><?php else: ?><a href="login.php">登录</a><?php endif ?></nav></body><script>//点击退出事件document.querySelector('#logout').addEventListener('click', function(event) {if (confirm('是否退出')) {event.preventDefault();window.location.assign('handle.php?action=logout');}});</script></html>
登录页
<!DOCTYPE html><html lang="en"><?php//使用session//session_start();//if(isset($_SESSION['user']))if(isset($_COOKIE['user']))exit('<script>alert("请不要重复登录");location.href="index.php";</script>');?><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>登录</title></head><body><form action="handle.php?action=login" method="POST"><fieldset><legend>欢迎登录</legend><div><label for="email">邮箱：</label><input type="email" name="email" id="email" autofocus placeholder="admin@php.com" required></div><div><label for="password">密码：</label><input type="password" name="password" id="password" placeholder="不少于4位不多于10位" required></div><div><button>登录</button><button><a href="register.php">去注册</a></button></div></fieldset></form></body></html>
注册页
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>注册</title></head><body><form action="handle.php?action=register" method="POST"><fieldset><legend>欢迎注册</legend><div><label for="username">用户名：</label><input type="text" name="username" id="username" placeholder="不少于5位不多于10位" autofocus required></div><div><label for="email">邮箱：</label><input type="email" name="email" id="email" autofocus placeholder="admin@php.com" required></div><div><label for="password1">密码：</label><input type="password" name="password1" id="password1" placeholder="不少于4位不多于10位" required></div><div><label for="password2">重复密码：</label><input type="password" name="password2" id="password2" placeholder="不少于4位不多于10位" required></div><div><button>注册</button></div></fieldset></form></body></html>
控制器
<?php//数据库查询$pdo = new PDO('mysql:host=localhost;dbname=phpedu','root','root');$sql = 'SELECT `*` FROM `users`';$stmt = $pdo->prepare($sql);$stmt->execute();$users = $stmt->fetchAll(PDO::FETCH_ASSOC);//session_start();//////////////////////////////////////////$action = $_GET['action'];switch(strtolower($action)){case 'login'://判断请求是否合法if ($_SERVER['REQUEST_METHOD'] === 'POST'){$email = $_POST['email'];$password = sha1($_POST['password']);$result = array_filter($users,function($user) use($email,$password){return $user['email'] === $email && $user['password'] === $password;});if(count($result) === 1){//$_SESSION['user']=serialize(array_pop($result));setcookie('user',serialize(array_pop($result)),time()+3600);exit('<script>alert("验证通过");location.href="index.php"</script>');}else{exit('<script>alert("验证不通过");location.href="login.php"</script>');}}else{die('请求非法');}break;case 'logout'://if(isset($_SESSION['user'])){//session_destroy();if(isset($_COOKIE['user'])){setcookie('user',null,time()-60);exit('<script>alert("退出成功");location.assign("index.php")</script>');}break;case 'register'://获取数据$username =$_POST['username'];$email =$_POST['email'];$password =sha1($_POST['password1']);$register_time =time();//验证数据库有无该邮箱$stmt = $pdo->prepare("SELECT `email` FROM `users` WHERE `email`='{$email}'");$stmt->execute();$db_email = $stmt->fetchAll(PDO::FETCH_ASSOC);if(empty($db_email)===true){$sql = "INSERT `users` SET `username`='{$username}',`email`='{$email}',`password`='{$password}',`register_time`='{$register_time}'";$stmt=$pdo->prepare($sql);$stmt->execute();if ($stmt->rowCount()===1){exit('<script>alert("注册成功");location.assign("login.php")</script>');}else{exit('<script>alert("注册失败");location.assign("register.php")</script>');}}else{exit('<script>alert("邮箱已存在");location.assign("register.php")</script>');}break;default:exit('未定义错误');}
感想
刚开始写的时候是在看了一遍视频以后，犯了很多的错误，各种漏写，之后一步一步验证错误，在结合老师的视频，又理了一遍，用户登录注册通过把控制处理代码统一写在一个模块，通过控制器来处理这些逻辑。