when there is a user logged in they should be directed to members.php but
even when logged in i get redirected to login.php instead of members.php, how do i fix this?
im new aswell so try and make it simple for me 
<?php
require('connect.php');
$sesuser = @$_SESSION['username'];
$username = @$_POST['username'];
$password = @$_POST['password'];
$submit = @$_POST['submit'];
if ($sesuser)
{
header( 'Location: members.php' ) ;
} else {
header( 'Location: login.php' ) ;
}
?>