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COOKIE与SESSION实现用户登录、注册、验证
雪~人胖胖
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1521 people have browsed it

1.cookie与session

发送cookie

  1. setcookie ( string $name [, string $value = "" [, int $expire = 0 [, string $path = ""
  2. 设置setcookie('user',serialize(array_pop($result)),time()+3600);
  3. 删除setcookie('user',null,time()-60);

session用法

  1. //开始会话
  2. session_start();
  3. //销毁会话
  4. session_destroy();

用户首页

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <?php
  4. if (isset($_COOKIE['user'])) $user=unserialize($_COOKIE['user']);
  5. ?>
  6. <?php
  7. //session用法
  8. //session_start();
  9. //if (isset($_SESSION['user'])) $user=unserialize($_SESSION['user']);
  10. ?>
  11. <head>
  12.     <meta charset="UTF-8">
  13.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  14.     <title>首页</title>
  15.     <link rel="stylesheet" href="css/style.css">
  16. </head>
  17. <body>
  18.     <nav>
  19.         <a href="">我的首页</a>
  20.         <?php if(isset($_COOKIE['user'])):?>
  21.         //session的用法
  22.         //<?php if(isset($_SESSION['user'])):?>
  23.         <a href="" id=logout><span style="color: red"><?php echo $user['username'] ?></span>退出</a>
  24.         <?php else: ?>
  25.         <a href="login.php">登录</a>
  26.         <?php endif ?>
  27.     </nav>
  28. </body>
  29. <script>
  30. //点击退出事件
  31. document.querySelector('#logout').addEventListener('click', function(event) {
  32.     if (confirm('是否退出')) {
  33.         event.preventDefault();
  34.         window.location.assign('handle.php?action=logout');
  35.     }
  36. });
  37. </script>
  38. </html>

登录页

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <?php
  4. //使用session
  5. //session_start();
  6. //if(isset($_SESSION['user']))
  7. if(isset($_COOKIE['user']))
  8.         exit('<script>alert("请不要重复登录");location.href="index.php";</script>'); 
  9. ?>
  10. <head>
  11.     <meta charset="UTF-8">
  12.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  13.     <title>登录</title>
  14. </head>
  15. <body>
  16.     <form action="handle.php?action=login" method="POST">
  17.         <fieldset>
  18.             <legend>欢迎登录</legend>
  19.             <div>
  20.                 <label for="email">邮箱：</label>
  21.                 <input type="email" name="email" id="email" autofocus placeholder="admin@php.com" required>
  22.             </div>
  23.             <div>
  24.                 <label for="password">密码：</label>
  25.                 <input type="password" name="password" id="password" placeholder="不少于4位不多于10位" required>
  26.             </div>
  27.             <div><button>登录</button><button><a href="register.php">去注册</a></button></div>
  28.         </fieldset>
  29.     </form>
  30. </body>
  31. </html>

注册页

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6.     <title>注册</title>
  7. </head>
  9. <body>
  10.     <form action="handle.php?action=register" method="POST">
  11.         <fieldset>
  12.             <legend>欢迎注册</legend>
  13.             <div>
  14.                 <label for="username">用户名：</label>
  15.                 <input type="text" name="username" id="username" placeholder="不少于5位不多于10位" autofocus required>
  16.             </div>
  17.             <div>
  18.                 <label for="email">邮箱：</label>
  19.                 <input type="email" name="email" id="email" autofocus placeholder="admin@php.com" required>
  20.             </div>
  21.             <div>
  22.                 <label for="password1">密码：</label>
  23.                 <input type="password" name="password1" id="password1" placeholder="不少于4位不多于10位" required>
  24.             </div>
  25.             <div>
  26.                 <label for="password2">重复密码：</label>
  27.                 <input type="password" name="password2" id="password2" placeholder="不少于4位不多于10位" required>
  28.             </div>
  29.             <div><button>注册</button></div>
  30.         </fieldset>
  31.     </form>
  32. </body>
  33. </html>

控制器

  1. <?php
  2. //数据库查询
  3. $pdo = new PDO('mysql:host=localhost;dbname=phpedu','root','root');
  4. $sql = 'SELECT `*` FROM `users`';
  5. $stmt = $pdo->prepare($sql);
  6. $stmt->execute();
  7. $users = $stmt->fetchAll(PDO::FETCH_ASSOC);
  8. //session_start();
  9. //////////////////////////////////////////
  10. $action = $_GET['action'];
  11. switch(strtolower($action)){
  12.     case 'login':
  13.         //判断请求是否合法
  14.         if ($_SERVER['REQUEST_METHOD'] === 'POST'){
  15.             $email = $_POST['email'];
  16.             $password = sha1($_POST['password']);
  17.             $result = array_filter($users,function($user) use($email,$password){
  18.                 return $user['email'] === $email && $user['password'] === $password;
  19.             });
  20.         if(count($result) === 1){
  21.             //$_SESSION['user']=serialize(array_pop($result));
  22.             setcookie('user',serialize(array_pop($result)),time()+3600);
  23.             exit('<script>alert("验证通过");location.href="index.php"</script>');
  24.         }else{
  25.             exit('<script>alert("验证不通过");location.href="login.php"</script>');
  26.         }
  28.         }else{
  29.             die('请求非法');
  30.         }
  31.         break;
  32.         case 'logout':
  33.             //if(isset($_SESSION['user'])){
  34.                 //session_destroy();
  35.             if(isset($_COOKIE['user'])){
  36.                 setcookie('user',null,time()-60);
  37.                 exit('<script>alert("退出成功");location.assign("index.php")</script>');
  38.             }
  39.             break;
  40.         case 'register':
  41.             //获取数据
  42.             $username =$_POST['username'];
  43.             $email =$_POST['email'];
  44.             $password =sha1($_POST['password1']);
  45.             $register_time =time();
  46.             //验证数据库有无该邮箱
  47.             $stmt = $pdo->prepare("SELECT `email` FROM `users` WHERE `email`='{$email}'");
  48.             $stmt->execute();
  49.             $db_email = $stmt->fetchAll(PDO::FETCH_ASSOC);
  50.             if(empty($db_email)===true){
  51.                 $sql = "INSERT `users` SET `username`='{$username}',`email`='{$email}',`password`='{$password}',`register_time`='{$register_time}'";
  52.             $stmt=$pdo->prepare($sql);
  53.             $stmt->execute();
  54.             if ($stmt->rowCount()===1){
  55.                 exit('<script>alert("注册成功");location.assign("login.php")</script>');
  56.             }else{
  57.                 exit('<script>alert("注册失败");location.assign("register.php")</script>');
  58.             }
  59.             }else{
  60.                 exit('<script>alert("邮箱已存在");location.assign("register.php")</script>');
  61.             }
  62.             break;
  63.             default:
  64.             exit('未定义错误');
  65. }

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。

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：刚学是这样, 写一行错一行, 大家都是这样入门的
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