Symfony is a powerful PHP framework renowned for its versatility and robustness. Established in 2005, it follows the MVC architecture, offering reusable components and tools for web development. With a strong community, Symfony excels in creating everything from small apps to complex enterprise systems, making it a top choice for PHP developers.
151. Which Symfony component is responsible for handling HTTP requests and responses and executing middleware?
152. What is an event in Symfony's event-driven architecture?
Answer:An occurrence or a change of state within an application that can be observed and reacted to
153. Which Symfony component allows developers to dispatch and listen for events within an application?
154. In Symfony, what is a subscriber in the context of event handling?
Answer:A listener that is registered to listen to specific events and can be reused across different parts of an application
155. How can you register an event listener in Symfony?
Answer:By adding an entry to the services.yaml file and tagging it as an event listener
156. In Symfony, when is the kernel.controller event typically dispatched?
Answer:Before handling a request
157. Which of the following statements is true about Symfony middleware?
Answer:Middleware is executed in a specific order defined by the application configuration.
158. What is the Symfony Profiler Toolbar used for?
Answer:To provide insights into the performance and behavior of requests, including executed events and middleware
159. Which command is used to list all registered event listeners and subscribers in a Symfony application?
Answer:php bin/console debug:event-dispatcher
160. In Symfony, what is the primary purpose of error handling?
Answer:To gracefully handle and report errors that occur during the execution of an application
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