Something
public text v1 · immutableif( ($_GET['page']) && (!session_vars('user_id')) )
{
$requiresAuth = ($_GET['page']=="search") || ($_GET['page']=="view_profile") || ($_GET['page']=="help") || ($_GET['page']=="view_photos")
if($requiresAuth)
{
header("Location: index.php?error=27"); die();
}
}