note 87835 added to function.ini-set

Recently, I've used this function, but maybe i don't understand the functionality yet. I explain this: I was working with ini_set trying to give a life time for the sessions, for example: I want that sessions won't exist after 10 seconds and I try with the next code: <?php function test_ini_set() { if ($_SESSION["us"]) { echo "Sesion exists"; echo "<br />".$_SESSION["us"]; //session_destroy(); } else { $_SESSION["us"] = "Nuevo valor"; echo "Sesion doesn't exists"; echo "<br />".$_SESSION["us"]; } } session_start(); ini_set("session.gc_maxlifetime","10"); test_ini_set(); ?> The first time that i execute the script the output is:"Sesion doesn't exists" but, I try again and now the output is "Sesion exists", for the next time I wait 11 seconds, but the output doesn't is "Sesion doesn't exists", is "Sesion exists" again.. I don't undestand this behavior, anyone knows how can resolve this? ---- Server IP: 148.206.80.9 Probable Submitter: 200.66.51.104 ---- Manual Page -- http://www.php.net/manual/en/function.ini-set.php Edit -- https://master.php.net/note/edit/87835 Del: integrated -- https://master.php.net/note/delete/87835/integrated Del: useless -- https://master.php.net/note/delete/87835/useless Del: bad code -- https://master.php.net/note/delete/87835/bad+code Del: spam -- https://master.php.net/note/delete/87835/spam Del: non-english -- https://master.php.net/note/delete/87835/non-english Del: in docs -- https://master.php.net/note/delete/87835/in+docs Del: other reasons-- https://master.php.net/note/delete/87835 Reject -- https://master.php.net/note/reject/87835 Search -- https://master.php.net/manage/user-notes.php