note 27935 added to ref.session

As a more general follow-up to Ryan's note from 11/23, just don't use any local variables with the same name as a member of the $_SESSION array. Doing so for me messed things up even in the simplest case (where I did not unset the session array member). -- http://www.php.net/manual/en/ref.session.php http://master.php.net/manage/user-notes.php?action=edit+27935 http://master.php.net/manage/user-notes.php?action=delete+27935 http://master.php.net/manage/user-notes.php?action=reject+27935