php实现注册登录流程操作
代码
index.php
<?phpnamespace _0822;session_start();// 判断是否已登录?if (isset($_SESSION['user'])) { $user = unserialize($_SESSION['user']);}function get_time($var){ return date('Y-m-d H:i:s',$var);}?><!DOCTYPE html><html lang="zh-CN"><head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>首页/入口文件</title> <link rel="stylesheet" href="/0822/zuoye/login/css/index.css"></head><body> <nav> <a href="index.php">我的博客</a> <?php if (isset($user)) : ?> <span style="margin-left: 300px"><?=$user['name']?></span> <a id="logout">退出</a> <?php else: ?> <a href="login.php">登录</a> <?php endif ?> </nav> <script> // 为退出按钮创建事件监听器 document.querySelector('#logout').addEventListener('click', function(event) { if (confirm('是否退出')) { // 禁用默认行为, 其实就是禁用原<a>标签的点击跳转行为,使用事件中的自定义方法处理 event.preventDefault(); // 跳转到退出事件处理器 window.location.assign('handle.php?action=logout'); } }); </script> <?php if( isset($user)){ $time = get_time($user['register_time']); echo "<ul>"; echo "<li>昵称:{$user['name']}</li>"; echo "<li>邮箱:{$user['email']}</li>"; echo "<li>注册时间:$time</li>"; echo "</ul>"; }else{ echo '<a href="register.php">还没有帐号, 等你注册一个吧</a>'; echo '<br>'; echo '<a href="login.php">我有帐号,直接登录</a>'; } ?></body></html>
login.php
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>用户登录</title> <link rel="stylesheet" type="text/css" href="/0822/zuoye/login/css/style.css"></head><body> <h3>用户登录</h3> <form action="handle.php?action=login" method="post"> <div> <label for="email">邮箱:</label> <input type="email" name="email" id="email" placeholder="demo@email.com" required autofocus> </div> <div> <label for="password">密码:</label> <input type="password" name="password" id="password" placeholder="不少于6位" required> </div> <div> <button>提交</button> </div> </form> <a href="register.php">还没有帐号, 注册一个吧</a></body></html>
register.php
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" type="text/css" href="/0822/zuoye/login/css/style.css"> <title>注册用户</title></head><body> <h3>用户注册</h3> <form action="handle.php?action=register" method="post" onsubmit="return compare()"> <div> <label for="name">呢称:</label> <input type="text" name="name" id="name" placeholder="不少于3个字符" required autofocus> </div> <div> <label for="email">邮箱:</label> <input type="email" name="email" id="email" placeholder="demo@email.com" required> </div> <div> <label for="p1">密码:</label> <input type="password" name="p1" id="p1" placeholder="不少于6位" required> </div> <div> <label for="p2">重复:</label> <input type="password" name="p2" id="p2" placeholder="必须与上面一致" required> </div> <div> <button>提交</button><span id="tips" style="color: red"></span> </div> </form> <a href="login.php">我有帐号,直接登录</a> <script> // 验证二次密码是否相等? function compare() { if (document.forms[0].p1.value.trim() !== document.forms[0].p2.value.trim()) { document.querySelector('#tips').innerText = '二次密码不相等'; return false; } } </script></body></html>
handle.php
<?phpnamespace _0822;use PDO;// 开启会话:必须写在顶部session_start();//查询用户表中的数据use表$db = new PDO('mysql:dbname=phpedu', 'root', 'root');$stmt = $db->prepare('SELECT * FROM `users`;');if ($stmt->execute()) { $users = $stmt->fetchAll(PDO::FETCH_ASSOC);} else { print_r($stmt->errorInfo());}// 获取用户操作类型$action = strtolower($_GET['action']);switch ($action) { // 1. 登录 case 'login': if ($_SERVER['REQUEST_METHOD'] === 'POST') { // 获取登录用户的数据:邮箱和密码 $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) { // 登录成功,写入session $_SESSION['user'] = serialize(array_pop($result)); exit('<script>alert("验证通过");location.href="index.php"</script>'); } // echo '请求类型错误'; die; exit('请求类型错误'); } // 2. 退出 // no break case 'logout': if (isset($_SESSION['user'])) { session_destroy(); exit('<script>alert("退出成功");location.href="index.php"</script>'); } // . 注册 // no break case 'register': if ($_SERVER['REQUEST_METHOD'] === 'POST'){ // 1. 获取新用户的数据 $email= $_POST['email']; $name= $_POST['name']; $password= sha1($_POST['p2']); $register_time = time(); //防止用户重复提交验证 $result = array_filter($users, function ($user) use ($email, $password) { return $user['email'] === $email && $user['password'] === $password; }); if(count($result) === 1){ exit('<script>alert("请勿重复提交数据");location.href="register.php"</script>'); } // 2. sql $sql = <<< SQL INSERT `users` SET `name`= ?, `email`= ?, `password`= ?, `register_time`= ?; SQL; $stmt = $db->prepare($sql); $data = [$name,$email,$password, $register_time]; if ($stmt->execute($data)) { if ($stmt->rowCount() > 0) { // 注册成功之后,让用户自动登录 $sql='SELECT * FROM `users` WHERE `id` = ' . $db->lastInsertId(); $stmt = $db->prepare($sql); $stmt->execute(); $newUser =$stmt->fetch(PDO::FETCH_ASSOC); $_SESSION['user'] = serialize($newUser); exit('<script>alert("注册成功");location.href="index.php"</script>'); } else { exit('<script>alert("注册失败");location.href="register.php"</script>'); } } else { print_r($stmt->errorInfo()); } } // no break default: exit('参数非法或未定义操作');}
效果图
1默认未登录状体
2注册成功
3退出相关操作
4注册页面
对重复提交相同信息用户信息提示
