Continuing on with his look at events in PHP, Alexander Netkachev takes another look today at another type of approach to his handy feature - the "Java way".

In my previous article I summarized event system definitions and showed an example of PHP event model, which is built with the call_user_func() function. This acticle expands the subject by introducing an advanced PHP event model that is based on sender/eventObject/listener collaboration, which was popularized by the Java world.

He steps through some examples with ProtocolCommandSupport.java and ProtocolCommandListener.java functionality, showing how to take that functionality back over to PHP and implement it using the built-in features.