i start a new session with : session_start(); then i set some session variable like this : $_SESSION['name']=$_POST['name'];\ and some another variables. at bottom of page i set header to diffrent page : header('location: index.php'); exit(); now in new page (index.php i can't access to my session variables, like $_SESSION['name']) what's wrong ? thanks. here is my files : a.php ======================================== session_start(); require ('config.inc.php'); if(isset($_POST)) foreach($_POST as $v=>$k) { $items[$v]=$k; } $sql="SELECT * FROM members WHERE username='{$items['user']}' AND pass=MD5('{$items['Password']}') "; $res=mysql_query($sql); $row=mysql_fetch_assoc($res); if($row['username']) { $_SESSION['type']=$row['type']; $_SESSION['name']=$row['name']; $_SESSION['family']=$row['family']; $_SESSION['username']=$row['username']; $_SESSION['date']=$row['date']; } header('location: admin.php'); exit(); ====================================== admin.php ===================================== . . . =================================