(PECL ev >= 0.2.0)
EvLoop::io — Create EvIo watcher object associated with the current event loop instance
final public EvLoop::io ( mixed $fd , int $events , callable $callback [, mixed $data = null [, int $priority = 0 ]] ) : EvIo
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.
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https://www.php.net/manual/en/evloop.io.php