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php实现账号切换源码

2026-02-28 03:05:15PHP

php实现账号切换源码

PHP 实现账号切换功能

实现账号切换功能通常需要以下几个关键部分：用户认证、会话管理、权限验证以及界面交互。以下是一个简单的实现示例：

数据库表结构（MySQL示例）

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    password VARCHAR(255) NOT NULL,
    role ENUM('admin', 'user') DEFAULT 'user'
);

用户登录认证

// login.php
session_start();
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $username = $_POST['username'];
    $password = $_POST['password'];

    // 数据库查询
    $pdo = new PDO('mysql:host=localhost;dbname=your_db', 'username', 'password');
    $stmt = $pdo->prepare("SELECT * FROM users WHERE username = ?");
    $stmt->execute([$username]);
    $user = $stmt->fetch();

    if ($user && password_verify($password, $user['password'])) {
        $_SESSION['user_id'] = $user['id'];
        $_SESSION['username'] = $user['username'];
        $_SESSION['role'] = $user['role'];
        header('Location: dashboard.php');
        exit;
    } else {
        $error = "Invalid credentials";
    }
}

账号切换功能

// switch_account.php
session_start();
if (!isset($_SESSION['user_id'])) {
    header('Location: login.php');
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['target_user'])) {
    $targetUser = $_POST['target_user'];

    $pdo = new PDO('mysql:host=localhost;dbname=your_db', 'username', 'password');
    $stmt = $pdo->prepare("SELECT * FROM users WHERE username = ?");
    $stmt->execute([$targetUser]);
    $user = $stmt->fetch();

    if ($user) {
        // 保存当前用户信息到临时会话
        $_SESSION['original_user'] = [
            'id' => $_SESSION['user_id'],
            'username' => $_SESSION['username'],
            'role' => $_SESSION['role']
        ];

        // 切换到目标账号
        $_SESSION['user_id'] = $user['id'];
        $_SESSION['username'] = $user['username'];
        $_SESSION['role'] = $user['role'];

        header('Location: dashboard.php');
        exit;
    }
}

切换回原始账号

// revert_account.php
session_start();
if (isset($_SESSION['original_user'])) {
    $_SESSION['user_id'] = $_SESSION['original_user']['id'];
    $_SESSION['username'] = $_SESSION['original_user']['username'];
    $_SESSION['role'] = $_SESSION['original_user']['role'];
    unset($_SESSION['original_user']);
}
header('Location: dashboard.php');

前端界面示例

<!-- switch_form.html -->
<form action="switch_account.php" method="post">
    <select name="target_user">
        <?php
        $pdo = new PDO('mysql:host=localhost;dbname=your_db', 'username', 'password');
        $stmt = $pdo->query("SELECT username FROM users WHERE username != ?");
        $stmt->execute([$_SESSION['username']]);
        while ($row = $stmt->fetch()) {
            echo '<option value="'.$row['username'].'">'.$row['username'].'</option>';
        }
        ?>
    </select>
    <button type="submit">切换账号</button>
</form>

<?php if (isset($_SESSION['original_user'])): ?>
<a href="revert_account.php">切换回原账号</a>
<?php endif; ?>