OCA\OcSms\Db\ConfigMapper::getKey PHP Method

    public function getKey($key)
    {
        try {
            $query = \OCP\DB::prepare("SELECT `value` FROM `*PREFIX*ocsms_config` WHERE `key` = ? AND `user` = ?");
            $result = $query->execute(array($key, $this->user));
            while ($row = $result->fetchRow()) {
                return $this->crypto->decrypt($row["value"]);
            }
            return false;
        } catch (DoesNotExistException $e) {
            return false;
        }
    }