vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/README.md

   1 EventDispatcher Component
   2 =========================
   3
   4 EventDispatcher implements a lightweight version of the Observer design
   5 pattern.
   6
   7     use Symfony\Component\EventDispatcher\EventDispatcher;
   8     use Symfony\Component\EventDispatcher\Event;
   9
  10     $dispatcher = new EventDispatcher();
  11
  12     $dispatcher->addListener('event_name', function (Event $event) {
  13         // ...
  14     });
  15
  16     $dispatcher->dispatch('event_name');
  17
  18 Resources
  19 ---------
  20
  21 You can run the unit tests with the following command:
  22
  23     $ cd path/to/Symfony/Component/EventDispatcher/
  24     $ composer.phar install --dev
  25     $ phpunit