Symfony Interview Questions and Answers

>> Symfony is a web application framework, written in PHP

>> Symfony is a set of reusable PHP components to build web applications, APIs, microservices and web services.

>> Symfony support MVC design pattern.

1. Fast Development:

   Reusing generic components/Libraries- Symfony provides many such components and libraries which can be reused.

2. MVC Pattern:

   Symfony supports MVC design pattern.

3. Unlimited flexibility
4. Expandable
5. Stable and sustainable
6. Ease of use.

>> To create your new Symfony application, first make sure you're using PHP 7.1 or higher and have Composer installed

>> Run the following command in cmd to install Symfony using Composer

composer create-project symfony/website-skeleton myFirstProject

The website-skeleton is optimized for traditional web applications. If you are building microservices, console applications or APIs, consider using the much simpler skeleton project:

composer create-project symfony/skeleton myFirstProject

cd myFirstProject
composer require symfony/web-server-bundle --dev

>> Move into your new project and start the server:

cd myFirstProject
php bin/console server:run

Open your browser and navigate to http://localhost:8000 If everything is working, you'll see a welcome page.

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Syntax: $request->query->get("paraemeter_name");

use Symfony\Component\HttpFoundation\Request;

public function updateAction(Request $request)
{
    // $_GET parameters
    $request->query->get('name');

    // $_POST parameters
    $request->request->get('name');
	
}

//You can also get all the form values as array by using the following:
$request->request->all();

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

You can get current route in Symfony using following code:

$request->get("_route");

//OR with Twig 
{{ app.request.attributes.get('_route') }}

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