Question

Can some explain to me the best way to store a $_GET variable in a session and the only way the sessions changes is when we verify the data the session is being change to is different from the GET variable.

Currently i have

 $tid = clean_get($_GET['tid']);

in a global file which is included on every page the problem with that is the value of $tid will be erased and not stored in a session like i want it to once the user is not on a page with $tid set in the url.

Answer 1

If you get $_GET[‘tid’] in url then set session again by that new value otherwise restore it from session. Thats it.

session_start();
$tid = (isset($_GET['tid']) && $_GET['tid']!="") ? clean_get($_GET['tid']) : $_SESSION['tid'];

Try this and tell me is it solved?