密码: 邮箱: ``` submit.php ```php if ($_SERVER["REQUEST_METHOD"] == "POST") { $username = $_POST["username"]; $password = $_POST["password"]; $email = $_POST["email"]; // 数据验证 // 数据处理 // 注册成功后跳转到登录页面 header("Location: login.php"); exit; } else { // 非 POST 请求,显示错误信息 header("HTTP/1 405 Method Not Allowed"); exit; } ?> ```