php - destroy session when broswer tab closed

Question

I have users login/logout application: I want to destroy session, its working fine when I close the browser (( all tabs )) , IE , Firefox working. But I want to destroy the session when user close the single tab . I am using :

session_set_cookie_params(0);
session_start();

Answer 1

Browsers only destroy session cookies when the entire browser process is exited. There is no reliable method to determine if/when a user has closed a tab. There is an onbeforeunload handler you can attach to, and hopefully manage to make an ajax call to the server to say the tab's closing, but it's not reliable.

And what if the user has two or more tables open on your site? If they close one tab, the other one would effectively be logged out, even though the user fully intended to keep on using your site.