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<?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();
?>
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