$garbage_timeout = 3600; ini_set('session.gc_maxlifetime', $garbage_timeout); require('teacher_checkuser.php'); require('Class/kemu.php'); $bh=$_POST['bh']; $zs=$_POST['zs']; $nj=$_POST['nj']; $brr=explode("-", $bh); $kemu=$krr[floor($brr[2])-1]; ?>