Design pattern for implementing plugins in PHP applications

Question

Is there a consensus on how plugins should be implemented in a PHP application?

I\'ve looked into the observer pattern which comes close, it\'s really just a notificati

Answer 1

Zend Framework is using the dispatchLoopStartup() and dispatchLoopShutdown() hooks as class methods. Each plugin is a class that implements the aforementioned methods.

ZF manual reference