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<?php interface MakeMeCMS_Listener_interface { public function __construct($method, $args); public function setFeedback($arg, $type); public function feedback(); } class MakeMeCMS_Listener implements MakeMeCMS_Listener_interface { private $_feedback; private $_type; public function __construct($method, $args = '') { if(method_exists($this, $method)) { if($args != '') { if(preg_match('#\,#', $args)) { $args = explode(',', $args); } $this->$method($args); } else { $this->$method(); } } } public function setFeedback($arg,$type) { $this->_feedback = $arg; $this->_type = $type; } public function feedback() { return $this->_feedback; } private function test(array $args) { $string = ''; foreach($args as $arg) { $string .= $arg.' '; } $this->setFeedback($string, 'text/plain'); } } class myAddon_Listener extends MakeMeCMS_Listener implements MakeMeCMS_Listener_interface { public function __construct($method, $args = '') { if(method_exists($this, $method)) { if($args != '') { if(preg_match('#\,#', $args)) { $args = explode(',', $args); } $this->$method($args); } else { $this->$method(); } } } public function setFeedback($arg, $type) { parent::setFeedback($arg, $type); } public function feedback() { return parent::_feedback; } private function test2() { echo('Hello World!'); } } $listener = new MakeMeCMS_Listener('test', 'foo,bar'); echo($listener->feedback()); $customListener = new myAddon_Listener('test2'); echo($customListener->feedback());