Session management in AL

al.php

<?php
	// Session management

	# Get session for an easier access
	$session = $_SESSION[$settings['session']];
	$datetime = new \Datetime();

	# Saving current page in session history
	$session['history'][] = array(
		'page' => $dump->url,
		'time' => $datetime
	);

	# Visit duration
	$session['duration'] = abs($datetime->getTimestamp() - $session['history'][0]['time']->getTimestamp());

	# Save the session
	$_SESSION[$settings['session']] = $session;