(PECL event >= 1.2.6-beta)
  	
    
      
      The setCallback purpose
    
    
      
      public void  EventListener::setCallback ( callable $cb  [, mixed $arg = NULL  ] )
    
    
    
    Adjust event connect listener's callback and optionally the callback argument.
Parameters: 
  
      
      
      	cb
    	
 
    	 The new callback for new connections. Ignored if NULL. 
Should match the following prototype:
 void callback ([  EventListener 
      
      $listener  = NULL  [,  mixed $fd  = NULL  [,  array $address  = NULL  [,  mixed $arg  = NULL  ]]]] )
      	arg
    	
 
    	 Custom user data attached to the callback. Ignored if NULL. 
Returns: 
    No value is returned.
Please login to continue.