How to clear cookie after taking value

Quote:

Actually, there is not a way to directly delete a cookie. Just use setcookie with expiration date in the past, to trigger the removal mechanism in your browser.

PHP

$cookie_name = 'pontikis_net_php_cookie';
unset($_COOKIE[$cookie_name]);
// empty value and expiration one hour before
$res = setcookie($cookie_name, '', time() - 3600);