(PECL libevent >= 0.0.1)
event_buffer_new — Create new buffered event
$stream
   , mixed $readcb
   , mixed $writecb
   , mixed $errorcb
   [, mixed $arg
  ] )Libevent provides an abstraction layer on top of the regular event API. Using buffered event you don't need to deal with the I/O manually, instead it provides input and output buffers that get filled and drained automatically.
stream
     Valid PHP stream resource. Must be castable to file descriptor.
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).
    event_buffer_new() returns new buffered event resource
   on success or FALSE on error.