note 108994 added to function.session-start

Hi, I have a huge problem with session_vars and mobile 3g connections. We have a virtual campus that is accessed with username and password. On every page verifies that the user is logged with the following code: <?PHP session_start(); //Avoid not logged users if ($_SESSION['auth']!=true) { session_unset(); header('Location:index.php'); // login page exit; } When a user tries to download a file and uses a 3G connection, sometimes loses its session variable that identifies who is logged in, and send the user to the login page. We have tried and fail to reproduce the error. We assume that may depend on the conditions of the 3G connection. All users who use a dongle 3g fails with a laptop. ---- Server IP: 130.206.1.5 Probable Submitter: 147.83.53.232 ---- Manual Page -- http://www.php.net/manual/en/function.session-start.php Edit -- https://master.php.net/note/edit/108994 Del: integrated -- https://master.php.net/note/delete/108994/integrated Del: useless -- https://master.php.net/note/delete/108994/useless Del: bad code -- https://master.php.net/note/delete/108994/bad+code Del: spam -- https://master.php.net/note/delete/108994/spam Del: non-english -- https://master.php.net/note/delete/108994/non-english Del: in docs -- https://master.php.net/note/delete/108994/in+docs Del: other reasons-- https://master.php.net/note/delete/108994 Reject -- https://master.php.net/note/reject/108994 Search -- https://master.php.net/manage/user-notes.php