Class EventDispatcher

The EventDispatcherInterface is the central point of Symfony's event listener system.

Listeners are registered on the manager and events are dispatched through the manager.

Symfony\Component\EventDispatcher\EventDispatcher implements Symfony\Component\EventDispatcher\EventDispatcherInterface

Direct known subclasses

Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher

Namespace: Symfony\Component\EventDispatcher
Author: Guilherme Blanco guilhermeblanco@hotmail.com
Author: Jonathan Wage jonwage@gmail.com
Author: Roman Borschel roman@code-factory.org
Author: Bernhard Schussek bschussek@gmail.com
Author: Fabien Potencier fabien@symfony.com
Author: Jordi Boggiano j.boggiano@seld.be
Author: Jordan Alliot jordan.alliot@gmail.com
Api
Located at EventDispatcher.php

Methods summary
`public Symfony\Component\EventDispatcher\Event`	# `dispatch( string $eventName, Symfony\Component\EventDispatcher\Event $event = null )` Parameters `$eventName` The name of the event to dispatch. The name of the event is the name of the method that is invoked on listeners. `$event` The event to pass to the event handlers/listeners. If not supplied, an empty Event instance is created. Returns `Symfony\Component\EventDispatcher\Event` See `Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch()` Api Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch()`
`public array`	# `getListeners( string $eventName = null )` Parameters `$eventName` The name of the event Returns array The event listeners for the specified event, or all event listeners by event name See `Symfony\Component\EventDispatcher\EventDispatcherInterface::getListeners()` Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::getListeners()`
`public boolean`	# `hasListeners( string $eventName = null )` Parameters `$eventName` The name of the event Returns boolean true if the specified event has any listeners, false otherwise See `Symfony\Component\EventDispatcher\EventDispatcherInterface::hasListeners()` Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::hasListeners()`
`public`	# `addListener( string $eventName, callable $listener, integer $priority = 0 )` Parameters `$eventName` The event to listen on `$listener` The listener `$priority` The higher this value, the earlier an event listener will be triggered in the chain (defaults to 0) See `Symfony\Component\EventDispatcher\EventDispatcherInterface::addListener()` Api Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::addListener()`
`public`	# `removeListener( string $eventName, callable $listener )` Parameters `$eventName` The event to remove a listener from `$listener` The listener to remove See `Symfony\Component\EventDispatcher\EventDispatcherInterface::removeListener()` Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::removeListener()`
`public`	# `addSubscriber( Symfony\Component\EventDispatcher\EventSubscriberInterface $subscriber )` Parameters `$subscriber` The subscriber. See `Symfony\Component\EventDispatcher\EventDispatcherInterface::addSubscriber()` Api Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::addSubscriber()`
`public`	# `removeSubscriber( Symfony\Component\EventDispatcher\EventSubscriberInterface $subscriber )` Parameters `$subscriber` The subscriber See `Symfony\Component\EventDispatcher\EventDispatcherInterface::removeSubscriber()` Implementation of `Symfony\Component\EventDispatcher\EventDispatcherInterface::removeSubscriber()`
`protected`	# `doDispatch( callable[] $listeners, string $eventName, Symfony\Component\EventDispatcher\Event $event )` Triggers the listeners of an event. Triggers the listeners of an event. This method can be overridden to add functionality that is executed for each listener. Parameters `$listeners` The event listeners. `$eventName` The name of the event to dispatch. `$event` The event object to pass to the event handlers/listeners.

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Interfaces

Class EventDispatcher

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