php登录注册页面模板

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
    <h2>Login</h2>
    <form action="login_process.php" method="post">
        <label for="username">Username:</label>
        <input type="text" id="username" name="username"><br><br>
        <label for="password">Password:</label>
        <input type="password" id="password" name="password"><br><br>
        <input type="submit" value="Login">
    </form>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Register</title>
</head>
<body>
    <h2>Register</h2>
    <form action="register_process.php" method="post">
        <label for="username">Username:</label>
        <input type="text" id="username" name="username"><br><br>
        <label for="email">Email:</label>
        <input type="email" id="email" name="email"><br><br>
        <label for="password">Password:</label>
        <input type="password" id="password" name="password"><br><br>
        <input type="submit" value="Register">
    </form>
</body>
</html>

<?php
session_start();

$username = $_POST['username'];
$password = $_POST['password'];

// 假设数据库连接和查询代码如下
$db = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$stmt = $db->prepare("SELECT * FROM users WHERE username = :username AND password = :password");
$stmt->bindParam(':username', $username);
$stmt->bindParam(':password', password_hash($password, PASSWORD_DEFAULT));
$stmt->execute();

$user = $stmt->fetch();

if ($user) {
    $_SESSION['user_id'] = $user['id'];
    header('Location: dashboard.php');
} else {
    echo "Invalid username or password.";
}
?>

<?php
session_start();

$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];

// 假设数据库连接和查询代码如下
$db = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$stmt = $db->prepare("INSERT INTO users (username, email, password) VALUES (:username, :email, :password)");
$stmt->bindParam(':username', $username);
$stmt->bindParam(':email', $email);
$stmt->bindParam(':password', password_hash($password, PASSWORD_DEFAULT));
$stmt->execute();

header('Location: login.php');
?>