public   void    EventBufferEvent::setCallbacks    (     callable     $readcb      ,     callable     $writecb      ,     callable     $eventcb      [,     string     $arg     ] )

EventBufferEvent::setCallbacksAssigns read, write and event(status) callbacks

readcb

Read event callback. See About buffer event callbacks .

writecb

Write event callback. See About buffer event callbacks .

eventcb

Status-change event callback. See About buffer event callbacks .

arg

A variable that will be passed to all the callbacks.