Simple library to dispatch events to listeners; with the particularity that you can't order your listeners, listeners can't modify the event, listeners can't stop other listeners to be called and the event must be an object.

Instalation

composer require innmind/event-bus

Example

use function Innmind\EventBus\bootstrap;
use Innmind\Immutable\Map;

class MyEvent{}

$echo = function(MyEvent $event): void {
    echo 'foo';
};

$dispatch = bootstrap()['bus'](
    Map::of('string', 'callable')
        (MyEvent::class, $echo)
);

$dispatch(new MyEvent); // will print "foo"

All listeners must be callables and can listen to a specific class, a parent class or an interface.