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php实现账号切换源码

2026-02-14 04:02:56PHP

以下是一个简单的PHP实现账号切换功能的示例代码，适用于基础的多账号登录场景。代码结构清晰，可根据实际需求扩展。

登录表单与切换逻辑

<?php
session_start();

// 模拟用户数据库
$users = [
    'user1' => ['password' => '123456', 'name' => '张三'],
    'user2' => ['password' => '654321', 'name' => '李四']
];

// 登录处理
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['login'])) {
    $username = $_POST['username'];
    $password = $_POST['password'];

    if (isset($users[$username]) && $users[$username]['password'] === $password) {
        $_SESSION['current_user'] = $users[$username];
        $_SESSION['logged_users'][$username] = $users[$username];
    }
}

// 账号切换处理
if (isset($_GET['switch_to'])) {
    $switch_user = $_GET['switch_to'];
    if (isset($_SESSION['logged_users'][$switch_user])) {
        $_SESSION['current_user'] = $_SESSION['logged_users'][$switch_user];
    }
}

// 登出处理
if (isset($_GET['logout'])) {
    $logout_user = $_GET['logout'];
    unset($_SESSION['logged_users'][$logout_user]);
    if ($_SESSION['current_user']['name'] === $logout_user) {
        $_SESSION['current_user'] = reset($_SESSION['logged_users']);
    }
}
?>

前端展示部分

<!DOCTYPE html>
<html>
<head>
    <title>账号切换演示</title>
</head>
<body>
    <?php if (!isset($_SESSION['current_user'])): ?>
        <form method="post">
            <input type="text" name="username" placeholder="用户名" required>
            <input type="password" name="password" placeholder="密码" required>
            <button type="submit" name="login">登录</button>
        </form>
    <?php else: ?>
        <h3>当前用户: <?php echo $_SESSION['current_user']['name']; ?></h3>

        <!-- 已登录账号列表 -->
        <div>
            <h4>可切换账号:</h4>
            <?php foreach ($_SESSION['logged_users'] as $username => $user): ?>
                <?php if ($username !== array_search($_SESSION['current_user'], $_SESSION['logged_users'])): ?>
                    <a href="?switch_to=<?php echo $username; ?>">
                        <?php echo $user['name']; ?>
                    </a> |
                <?php endif; ?>
            <?php endforeach; ?>
        </div>

        <!-- 登出选项 -->
        <div>
            <?php foreach ($_SESSION['logged_users'] as $username => $user): ?>
                <a href="?logout=<?php echo $username; ?>">登出 <?php echo $user['name']; ?></a> |
            <?php endforeach; ?>
        </div>
    <?php endif; ?>
</body>
</html>