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Improve The Quality Of Your Code With Event Listeners in Symfony
Symfony has an event-driven architecture. The EventListener component is crucial in reacting to various events within the framework. By using Event Listeners and Event Subscribers, you can decouple your application’s logic, making it easier to maintain. In this article let’s explore this main Symfony feature.
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What Are Event Listeners?
Event listeners are PHP classes that listen for specific events and execute logic in response. They are widely used for handling various application aspects, such as logging, security, and business logic.
Moreover, Symfony dispatches numerous events throughout the request lifecycle, and you can hook into these to modify behavior dynamically.
Event Listeners will be useless without Event Dispatcher and Event Subscribers let’s explain their role:
- Event Dispatcher: the core component responsible for dispatching events and notifying listeners.
- Event Subscribers: a class that subscribes to multiple events and defines which methods should be called for each event.
