EventDispatcher Flashcards
1
Q
What are ways to react on events?
A
EventSubscriber
EventListener
2
Q
Which interfaces / classes are part of the event-dispatcher component?
A
- EventDispatcherInterface (to dispatch the event)
- EventSubscriberInterface
- Event
3
Q
Which PSR defines the event-dispatcher component?
A
PSR-14
https://www.php-fig.org/psr/psr-14/
4
Q
Which method is implemented in the EventSubscriberInterface?
A
::getSubscribedEvents()
5
Q
What are ways to make an EventListener to listen to an Event?
A
EventListener
Registering with ->addEventListener
6
Q
How to add priority to an Event-listener / -subscriber?
A
with the parameter $priority
