Symfony Framework Interview Questions & Answers (2025)

Symfony is a set of PHP Components and a leading PHP framework to create websites and dynamic web applications. It follows the MVC design pattern and released under the MIT License.

Also Read: Top differences between Symfony and Laravel PHP Framework

Yes, Symfony is open sourced Framework released under the MIT License. You can download it free from https://symfony.com/download

Symfony 3.4 is the latest version of Symfony.

To install and run Symfony 3, your server must fulfill the following requirements

• PHP >= 5.5.9
• Composer
• JSON enabled
• ctype enabled
• date.timezone should be set (default timezone will not work)

Symfony default template engine is Twig, however, your are free to use plain PHP code if you want.

Symfony bundles are very similar to plugins or packages in other frameworks or CMS. In Symfony, everything is a bundle from core framework components to the code you write. The bundle gives the flexibility to use pre-built features packaged in third-party bundles or to create and distribute your bundles.

There are two types of bundles are available in Symfony :

1. Application-specific bundles: only used to build your application.
2. Reusable bundles: meant to be shared across many projects.

Symfony is convention based Framework.
Also Read 100 Best Laravel Interview Questions

You can get the current route in Symfony using the $request->get(‘_route’); method.

composer show command is used to list all installed packages/dependencies of your current project.

SessionInterface object set and get method is used to set and get sessions in Symfony2.Below look below example:

public function sessionAction(SessionInterface $session)
{
    // store an attribute for reuse during a later user request
    $session->set('user_id', 5);

    // get the attribute set by another controller in another request
    $user_id = $session->get('user_id');  
}

$request->query->get(‘paraemeter_name’) method is used to get the request parameters in symfony2.

Kernel’s class registerBundles() method is used to enable bundles in Symfony.

Descriptors are objects to render documentation on Symfony Console Apps.

Yes, bundles in Symfony follow a predefined directory structure to organize code and resources efficiently.

General rules for creating a method in within the controller in Symfony.

• Only action methods should be public.
• Controller methods should be short; if your controller is long, consider refactoring it.
• Action methods must have the “Action” suffix
• Action methods should return a valid response object

Run below command in your console to install Symfony using Composer

composer create-project symfony/framework-standard-edition my_project_name