Cookie Redirect

<?php

/*
*
* Periodical Cookie Redirect
* (c)2013 Dennis Kupec
*
*/

$_redirect_time = "3600"; // Time in seconds for each redirect (3600 = 1 hour)
$_redirect_link = "http://google.com"; // Link to redirect to (eg. http://google.com)

/*
* Ignore everything below here
*/

$_newtime = time()+$_redirect_time;

if(!isset($_COOKIE["redirtime"])) setcookie("redirtime", $_newtime);

if($_COOKIE["redirtime"]<=time()) {
    setcookie("redirtime", $_newtime);
    header("Location: ".$_redirect_link);
}

?>