static function isAccountHolder($account_id) { $sql = "SELECT holder_id, holders.authcode AS authcode, brand_id, limkey FROM holders JOIN accounts USING (account_id) WHERE account_id IN (?) AND user_id IN (?)"; $rows = DBquery::get($sql, array($account_id, self::$user_id)); if ($rows) { self::$holder_id = $rows[0]['holder_id']; } return $rows[0]; }