PHP - 销毁会话并删除 cookie

Question

I have a problem clear cookie when session is destroyed or expired. I create application with session (logged user) and cookies (cart) and I must clear cart when session is destroyed or expired. I'm tring use $_SESSION[SESSION_NAME], but not always $_SESSION[SESSION_NAME] has been removed after destroy or expire.

if(!isset($_COOKIE[SESSION_NAME])) {
   clearCookie();
}

When I remove cookie with session ID then cookies has been cleared, but when session expire then cookie (and cookie with session ID) have been existed.

I'm tried all session functions ( https://www.php.net/manual/en/ref.session.php ), but I'm not found good solution. How to clear cookie when session has been removed or expired?

Answer 1

As your cookie is identified by data from your session , it would be logical to delete/clear the cookie before destroying the session.

So, whenever you need to destroy the session, first clear the cookie, then destroy your session.

Something like this:

clearCookie();
unset($_SESSION);
session_destroy();

Answer 2

set cookie value to the past date

setcookie($cookie_name, '', time() - (86400 * 30), "/","");  // 86400 = 1 day
session_destroy();