note 31159 added to function.unset

From: Date: Fri, 11 Apr 2003 13:01:37 +0000
Subject: note 31159 added to function.unset
Groups: php.notes 
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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 -- http://www.php.net/manual/en/function.unset.php http://master.php.net/manage/user-notes.php?action=edit+31159 http://master.php.net/manage/user-notes.php?action=delete+31159 http://master.php.net/manage/user-notes.php?action=reject+31159

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