(PECL amqp >= Unknown)
AMQPChannel::setPrefetchSize — Set the window size to prefetch from the broker
Set the prefetch window size, in octets, during a call to AMQPQueue::consume or AMQPQueue::get. Any call to this method will automatically set the prefetch message count to 0, meaning that the prefetch message count setting will be ignored.
The window size, in octets, to prefetch.
Throws AMQPConnectionException if the connection to the broker was lost.
TRUE on success or
FALSE on failure.