<?php # Script 12.11 - logout.php #2
// This page lets the user logout.
// This version uses sessions.

// If session variable exists, delete and redirect the user back to same page
if (isset($_SESSION['user_id']) && !isset($_GET['status'])) {
	// Need the functions:
	require (CHAPTER_PATH.'/'.$chapter.'/includes/12.2.php');

	$_SESSION = array(); // Clear the variables.
	// session_unset(); deprecated
	session_destroy(); // Destroy the session itself.
	setcookie (session_name(), '', time()-3600, '/', '', 0, 0); // Destroy the session cookie.
	
	redirect_user('index.php?chapter=12&path=using+sessions&script=12.11&status=loggedout');
	
} else {	
	include (CHAPTER_PATH.'/'.$chapter.'/includes/12.10.php');
	echo '<div id="content">';
	if(isset($_GET['status']) && $_GET['status']=='loggedout'){
		//confirm log out
		echo "<h1>Logged Out</h1>
		<p>Thanks for visiting. You are now logged out of our system.</p>";
	} else {
		echo '<p class="error">You need to log in before you can be logged out!<br />
		<a href="index.php?chapter=12&amp;script=12.8&amp;path=using+sessions" title="Log In">Log in</a></p>';
	}
	echo '</div>';
	include (CHAPTER_PATH.'/'.$chapter.'/includes/footer.php'); 
}
?>