required-login.php

<?php

session_start(); // start session cookies (otherwise won't remember login between pages)

require("includes/config.php");
require("includes/Database.singleton.php");
require("includes/Login.singleton.php");

// create initial singleton database connection and connect
$db = Database::obtain(DB_SERVER, DB_USER, DB_PASS, DB_DATABASE);
$db->connect();

// create login singleton object
$login = Login::obtain();

// force the user to log in
$login->hard();

?>
<h1>In login required page</h1>

<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus in leo id ligula ornare hendrerit. Praesent convallis dui sed elit pretium sed convallis arcu ultrices. Vestibulum egestas dignissim leo.</p>

<a href="<?php echo $_SERVER['SCRIPT_NAME'];?>?action=clear_login">Logout</a>