event_buffer_set_callback
(PECL libevent >= 0.0.4)
event_buffer_set_callback — Set or reset callbacks for a buffered event
Description
   resource event_buffer_set_callback
    ( resource $event
   , mixed $readcb
   , mixed $writecb
   , mixed $errorcb
   [, mixed $arg
  ] )
  Sets or changes existing callbacks for the buffered event.
Parameters
- event
- 
      Valid buffered event resource. 
- readcb
- 
      Callback to invoke where there is data to read, or NULL if no callback is desired. 
- writecb
- 
      Callback to invoke where the descriptor is ready for writing, or NULL if no callback is desired. 
- errorcb
- 
      Callback to invoke where there is an error on the descriptor, cannot be NULL. 
- arg
- 
      An argument that will be passed to each of the callbacks (optional). 
Return Values
Returns TRUE on success or FALSE on failure.