How to detect if a user has logged out, in php?

Question

After the user successfully logs in, I store login = true in database. But how do I check if the user logged out by closing the browser without clicking the logout button? A

Answer 1

Normally you would put such information in sessions.

$_SESSION['user'] = "A user name";

Then when you want to logout you do:

session_destroy();

Some more info on sessions here and a tutorial.