63 lines
1.2 KiB
PHP
63 lines
1.2 KiB
PHP
<?PHP
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/**
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* example that show how to use objects as observers without
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* loosing references
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*
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* @package Event_Dispatcher
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* @subpackage Examples
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* @author Stephan Schmidt <schst@php.net>
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*/
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/**
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* load Event_Dispatcher package
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*/
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require_once 'Event/Dispatcher.php';
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/**
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* example sender
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*/
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class sender
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{
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var $_dispatcher = null;
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function sender(&$dispatcher)
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{
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$this->_dispatcher = &$dispatcher;
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}
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function foo()
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{
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$notification = &$this->_dispatcher->post($this, 'onFoo', 'Some Info...');
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echo "notification::foo is {$notification->foo}<br />";
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}
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}
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/**
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* example observer
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*/
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class receiver
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{
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var $foo;
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function notify(&$notification)
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{
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echo "received notification<br />";
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echo "receiver::foo is {$this->foo}<br />";
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$notification->foo = 'bar';
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}
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}
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$dispatcher = &Event_Dispatcher::getInstance();
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$sender = &new sender($dispatcher);
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$receiver = new receiver();
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$receiver->foo = 42;
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// make sure you are using an ampersand here!
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$dispatcher->addObserver(array(&$receiver, 'notify'));
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$receiver->foo = 'bar';
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echo 'sender->foo()<br />';
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$sender->foo();
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?>
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