Symfony interview questions

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

• 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

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');  
}

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