Event Listeners and Event Subscribers are essential mechanisms for managing events in an application. They allow code to be executed in response to specific events, thereby facilitating behavior management and application modularity.
Event Listeners are components that react to particular events. When an event is emitted, the associated listener activates to execute the designated code. This approach is ideal for specific tasks such as sending an email after a registration or updating data following a modification.
Event Subscribers, on the other hand, allow for grouping the handling of multiple events within a single class. By implementing a specific interface, the subscriber declares the events it is subscribed to and the methods to handle them. This method is convenient for organizing and centralizing code related to multiple events, thus simplifying the management of complex actions.