User Validation

CODE (There is no display)

<?php
//get the cookie that was set up on the login process page
$user_access= $_COOKIE['user'];
//use an if statement to stop the user from continuing on the page if he does not have access
if($user_access=='')
{
//use the header command to send the user back to the login page to gain access
	header('LOGIN PAGE');
}
?>