<?PHP /** * example that shows how to cancel an event * * @package Event_Dispatcher * @subpackage Examples * @author Stephan Schmidt <schst@php.net> */ /** * load Event_Dispatcher package */ require_once 'Event/Dispatcher.php'; /** * example sender */ class sender { var $_dispatcher = null; function sender(&$dispatcher) { $this->_dispatcher = &$dispatcher; } function foo() { $this->_dispatcher->post($this, 'onFoo', 'Some Info...'); } } /** * example observer */ function receiver1(&$notification) { echo "receiver 1 received notification<br />\n"; // the notification will be cancelled and no other observers // will be notified $notification->cancelNotification(); } /** * example observer */ function receiver2(&$notification) { echo "receiver 2 received notification<br />\n"; } $dispatcher = &Event_Dispatcher::getInstance(); $sender = &new sender($dispatcher); $dispatcher->addObserver('receiver1', 'onFoo'); $dispatcher->addObserver('receiver2', 'onFoo'); $sender->foo(); ?>