How to log out a user who is not active for a certain amount of time?

Question

PHP

Interested in the implementation of the following: It is necessary to delete the session where the administrator was not active within, say, 10 minutes after the last activity. Something like this: Logged in -> wandered through the admin panel-> no action for 10 minutes -> activity -> throws it on the authorization page and asks to enter the password again.

Answer 1

session lifetime set

Answer 2

Setting the cookie and session lifetime should solve the problem in most cases.

Answer 3

if ($_SESSION['last_activity']-date()>=600) {header("Location: /logon/");exit;}
else $_SESSION['last_activity']=date();