Events on PHP. Is it possible?

Question

I\'m coming from the C# world and has just started doing a little PHP coding, so I was wondering if it is possible to use events on PHP, or if it is planned to include this

Answer 1

You can create something like event handling class in PHP :

class Event {
    protected $_eventCallbacks = array();
    function addEventCallback($callback) {
        $this->_eventCallbacks[$callback] = $callback;
    }
    function removeEventCallback($callback){
        if(isset($this->_eventCallbacks[$callback])){
            unset ($this->_eventCallbacks[$callback]);
        }
    }
    function cleanEventCallback(){
        foreach ($this->_eventCallbacks as $callback) {
            unset ($callback);
        }
    }
    function fireEvent() {
        foreach ($this->_eventCallbacks as $callback) {
            call_user_func($callback);
        }
    }
}

This code was taken from here http://setahost.com/php-events-singletone-and-factory-pattern-application/ There is also good example of modular and sub modular application using this class .