(PECL ev >= 0.2.0)
EvLoop::io — Create EvIo watcher object associated with the current event loop instance
$fd
,$events
,$callback
,$data
= null
,$priority
= 0
Create EvIo watcher object associated with the current event loop instance.
All parameters have the same meaning as for EvIo::__construct()
Returns EvIo object on success.