public function createFolderDB(string $user, string $name = '') {
        $params = [
            'id' => '',
            'logins'  => $user,
            'folders' => $name == '' ? $this->hash() : $name,
        ];
        $res = $this->db->row('SELECT logins FROM add_tmp WHERE logins = :logins', $params);
        //var_dump($params);
        var_dump($res);
        exit;

        if(!$this->db->row('SELECT logins FROM add_tmp WHERE logins = :logins', $params)) {
            $this->db->query('INSERT INTO add_tmp VALUES (:id, :logins, :folders)', $params);
        } else
            $this->db->query('UPDATE add_tmp SET folders = :folders WHERE folders = :folders', $params);
    }

    public function row($sql, array $params = []) {
        $result = $this->query($sql, $params);
        return $result->fetchAll(PDO::FETCH_ASSOC);
    }

    public function query($sql, array $params = []) {
        $res = $this->db->prepare($sql);
        if(!empty($params)) {
            foreach ($params as $key => $val) {
                if($key == 'id') {
                    $val = intval($val);
                }
                if($key === 'user_id') {
                    $val = intval($val);
                }

                if(is_int($val)) {
                    $type = PDO::PARAM_INT;
                } else {
                    $type = PDO::PARAM_STR;
                }
                $res->bindValue(':'.$key, $val, $type);
            }
        }
        $res->execute();
        $arr = $res->errorInfo();
        if($arr[1] != null) { var_dump($arr); }
        return $res;
    }