event_timer_set Prepare a timer event &reftitle.description; boolevent_timer_set resourceevent callablecallback mixedarg Prepares the timer event to be used in event_add. The event is prepared to call the function specified by the callback when the event timeout elapses. After initializing the event, use event_base_set to associate the event with its event base. In case of matching event, these three arguments are passed to the callback function: fd Signal number or resource indicating the stream. events A flag indicating the event. This will always be EV_TIMEOUT for timer events. arg Optional parameter, previously passed to event_timer_set as arg. &reftitle.parameters; event Valid event resource. callback Callback function to be called when the matching event occurs. arg Optional callback parameter. &reftitle.returnvalues; &return.success;