public function get_bit(string $id, bool $with_config = true): array
  {
    if (
      \bbn\str::is_uid($id) &&
      ($bit = $this->db->rselect($this->class_cfg['tables']['user_options_bits'], [], [
        $this->class_cfg['arch']['user_options_bits']['id'] => $id
      ]))
    ){
      if ( !empty($with_config) ){
        return $this->explode_bit_cfg($bit);
      }
      return $bit;
    }
    return [];
  }