How to call a function before the idle timeout session expiry in PHP

Question

I have a large application which expires the session data after 30 minutes of idle time. Now I want to call a function before the session expiration.

My Reason for above question: I am storing a unique id in database for some purpose. When the user clicks logout, I will delete that ID. I want to delete that ID even when the user session expires after idle time.

Answer 1

As far as i know , it will be bad practice to set a "counter" for users to check if their session is expired.

If you need this ID to see who is connected in your administration aria , one possible way to do it is by checking the session expiration on loading admin page , and then delete the expired sessions rows then showing only active sessions.

So my idea is that while you are not using your admin dashboard it is okay that some sessions ID's still in your database , once you try to see who is online , the check function is called and clean up your data for expired session.

THAT IF YOU ARE USING THAT ID FOR SOMTHING LIKE THAT SINCE YOU DIDN''T SHARE THE WHOLE REASON OF WHY YOU NEED TO DO SO.