Code Sample Preventing Session Hijacking PHP

Problem:- Code Sample Preventing Session Hijacking PHP

Solution:-

<?php 	

ini_set('session.use_only_cookies', true);
session_start();

$salt = "deep";
$tokenStr = strval(date('W')).$salt;
$token = md5($tokenStr);

if (!isset($_REQUEST['token']) || $_REQUEST['token'] != $token) {
	exit();

}
$_SESSION['token'] = $token;
output_add_rewrite_var('token', $token);


 ?>