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   1 # int pq\Connection::poll()
   2
   3 Poll an [asynchronously](pq/Connection/: Asynchronous Usage) operating connection.
   4 See pq\Connection::resetAsync() for an usage example.
   5
   6 ## Params:
   7
   8 None.
   9
  10 ## Returns:
  11
  12  * int, pq\Connection::POLLING_* constant
  13
  14 ## Throws:
  15
  16 * pq\Exception\InvalidArgumentException
  17 * pq\Exception\RuntimeException
  18 * pq\Exception\BadMethodCallException
  19