Symfony interview questions and Answers

Bundles in Symfony are similar to packages or plugins in other CMS or frameworks. In Symfony, bundles provide the developers with the flexibility to use pre-built features consisted of third-party bundles or to create and distribute their own bundles.

Symfony has two types of bundles:

• Application specific bundles
• Reusable bundles

The Symfony routing configuration files are written with YAML, XML and PHP technology. The default routing configuration file in Symfony is: app/config/routing.yml

Using Symfony has a number of its unique benefits, such as:

• Fast development
• Unlimited user flexibility
• MVC pattern
• The stable and sustainable framework
• Better user control & ease of use
• Expandable

Symfony has five cache adapters available inside it. The available cache adapters are as following:

• File system cache adapter
• Array cache adapter
• APCu cache adapter
• PHP files cache adapter
• Redis cache adapter

In Symfony, developers can get the request parameter by using the following syntax:

• $this->container->get('request');
• $name=$request->query->get('name');

Symfony is a leading, reliable and one of the most used PHP framework combined with a set of highly featureful and reusable PHP components to create websites, dynamic web applications, web services and microservices. It is an open source framework and supports the MVC design pattern.

Symfony controller is a PHP function that obtains information from the HTTP request to construct and return an HTTP response. The response can vary and could be an XML document, an HTML page, a redirect, a 404 error, a serialized JSON array, or any other request.

A group of configurations used to run an application is basically described as an Environment in Symfony.

This framework has two default environments:

• Prod: Optimized for executing an application on production
• Dev: Used when an application is developed locally.

Symfony framework supports various user popular web servers. For example, few of the best web servers compatible with Symfony are LAMP, WAMP, XAMP, MAMP, Microsoft IIS, Nginx, and PHP’s built-in web server.

A Symfony controller can do virtually anything inside this framework. From redirecting and forwarding to accessing core services to rendering templates; a controller in Symfony can be used for various basic tasks.