code: protected function _routerCall() : bool {
          $callback = $this->_pCall[self::_CALLBACK];
          try {
              return boolval($callback() ?? true);
          } catch (\PDOException $exception) {
              Worker::log($exception->getMessage());
              $this->connection->close();
              return false;
          }
      }
docs: 调用路由回调
  
  @return bool