EvLoop::io Create EvIo watcher object associated with the current event loop instance &reftitle.description; final public EvIo EvLoop::io mixed fd int events callable callback mixed data &null; int priority 0 Create EvIo watcher object associated with the current event loop instance. &reftitle.parameters; All parameters have the same meaning as for EvIo::__construct &reftitle.returnvalues; Returns EvIo object on success. &reftitle.seealso; EvIo::__construct