note 31159 deleted from function.unset by sniper

Note Submitter: oliviergeorg@ya.com ---- unset and session variables ==================== I had the same problem as till dot krullmann at gmx dot net. I think it has to do with register_globals=ON, and that the reason is as follows: 1st page: set the session variable <? session_start(); $_SESSION['X'] = 1; ?> 2nd page: unset the session variable <? // both $_SESSION['X'] _and_ $X are set unset($_SESSION['X']); // $X is still set !!! and will save it the session !!! ?> 3rd page: check the session variable <? // since register_globals==ON, PHP has filled again $_SESSION['X'] echo isset($_SESSION['X']); ?> and we see it is set !!! So there are 3 solutions: a) turn register_globals OFF b) when unsetting $_SESSION['X'], unset $X as well c) call session_unregister ! Olivier