将会话变量传递给PHP中的多个页面

Question

我使用这个简单的登录脚本制作一个简单的面板： https://github.com/panique/php-login-minimal

我的问题是我无法将$ _SESSION变量传递给更多的那一页。我希望用户看到更多的那一页。

这是我的代码的一部分：

 // ... ask if we are logged in here:
if ($login->isUserLoggedIn() == true) {
    // the user is logged in. you can do whatever you want here.
    // for demonstration purposes, we simply show the "you are logged in" view.
    include("views/logged_in.php");
} else {
    // the user is not logged in. you can do whatever you want here.
    // for demonstration purposes, we simply show the "you are not logged in" view.
    include("views/not_logged_in.php");
}

即使我包含 example.php ，它仍然无效。