(PECL ev >= 0.2.0)
EvIo::__construct — Constructs EvIo watcher object
$fd
   
   , 
    int
     $events
   
   , 
    callable
     $callback
   
   [, 
    mixed
     $data
   
   [, 
    int
     $priority
   
  ]] )Constructs EvIo watcher object and starts the watcher automatically.
fd
    Can be a stream opened with fopen() or similar functions, numeric file descriptor, or socket.
events
    
      Ev::READ
      and/or
      Ev::WRITE
      . See
      the bit masks
      .
     
callback
    See Watcher callbacks .
data
    Custom data associated with the watcher.
priority
    Returns EvIo object on success.