Performing an action on cookie expiration

Question

What I want to do it cause an action when a cookie expires. For example i have a cookie:

setcookie('loggedIn', true, time()+ 3600);

When the cookie expires I would like to be able to redirect them to a different web page automatically and call a php script that would log the user out.

Answer 1

You can check it via $_COOKIE.

if(!isset($_COOKIE['loggedIn'])){
  header('Location: /path/to/another/page');
  exit;
}

You can code it in a separate file and include it in every page OR you can implement it in XHR.