(PECL libevent >= 0.0.1)
Event::set — Re-configures event
$base
   
   , 
    mixed
     $fd
   
   [, 
    int
     $what
   
   [, 
    callable
     $cb
   
   [, 
    mixed
     $arg
   
  ]]] )Re-configures event. Note, this function doesn't invoke obsolete libevent's event_set. It calls event_assign instead.
base
    The event base to associate the event with.
fd
    
      A stream, socket resource, or numeric file descriptor; for signal events
      pass
      -1
      .
     
what
    See Event flags .
cb
    The event callback. See Event callbacks .
arg
    Custom data associated with the event. It will be passed to the callback when the event becomes active.
   Returns TRUE on success. Otherwise FALSE.