$query = mysql_query("SELECT * FROM `cms_ban_users` WHERE `user_id` = '" . $user['id'] . "' ORDER BY `ban_time` DESC LIMIT 1");
if (mysql_num_rows($query)){
$result = mysql_fetch_assoc($query);
if($result['ban_time'] - time() != 0)
echo '<div class="alarm">У пользователя '.functions::checkout($user['name']).' бан, ему осталось '.(functions::timecount($result['ban_time'] - time()).'</div>';
}Вроде так