Destroy Cookies

[Shadow121]

I have a website that uses cookies and i need to know how to destroy them o.o This is a volnurability to: javascript: alert(document.cookie) and another code in which i wont post just in case.

[aking47]

With PHP:
<?php
// set the expiration date to one hour ago
setcookie ("TestCookie", "", time() - 3600);
?>