public function getContributors() {
        
        $query = "SELECT u.username, u.user_id, CONCAT('/user/', u.user_id) AS url, COUNT(*) AS num FROM nuke_users AS u LEFT JOIN image AS i ON i.user_id = u.user_id WHERE i.user_id != 0 AND i.provider != 'rpoldgallery' GROUP BY u.user_id ORDER BY num DESC LIMIT 0, 10";
        
        return $this->db->fetchAll($query);