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Introduction

One of the many web development technologies that have advanced significantly is PHP. An open-source framework like Symfony will be an excellent alternative if you're a newbie because it's simple to use and learn. Developers frequently use Symfony since it provides a wide range of capabilities that make the development process simple. Whether you are a beginner, an intermediate, or an expert in Symfony, this guide will aid you to boost your confidence and knowledge of Symfony. This guide will also provide step-by-step explanations for each question, which will help you understand the concept in detail. With Symfony interview questions by your side, you can be confident that you will be well-prepared for your next interview.

Symfony Interview Questions and Answers
Beginner

1. What is Symfony?

Symfony is a PHP framework that aims to accelerate the design and maintenance of web applications and replace recurrent coding tasks. A few prerequisites are mandate for installation: Linux, FreeBSD, Mac OS or Microsoft Windows, and a web server with PHP. 

Rails-like programming method, clean design, and code readability. Symfony offers Ajax helpers, plugins, and an admin generator interface, which renders the programming of complete applications truly easy. The developers hence can concentrate on applicative logic without wasting time writing infinite XML configuration files. 

Symfony can be utilized to create powerful applications in an enterprise context as it permits developers to test, debug, and document projects, giving them complete control over configuration and customization - from the directory structure to the foreign libraries. Symfony utilizes the Model-View-Controller design pattern, splitting the business logic from the presentation layer. 

2. What are the benefits of Symfony?

Symfony PHP framework is effortless to use gratitude to its Ruby-On-As a development framework. Symfony simplifies a developer's work, as it doesn't require writing extensive codes to create web applications.

Advantages of Symfony Framework: 

  1. Fast-Paced Development: Time requires fast and high-performance applications. The developer community needs the flexibility to create great applications. Symfony 2 has the ability for performance optimization of applications. It ingests less memory and authorizes developers to develop applications at a considerable speed. 
  2. Flexibility: Symfony is fully adjustable to a developer's unique requirements, with independent and configurable components. Developers can easily create complicated applications with multiple functional features with their event dispatcher and dependency injector. The required functionalities can be built brick by brick and carry out the development task at their own pace. 
  3. Expandable Framework: Everything is present as a bundle in Symfony. Each bundle adds unique functionality and adds to its expansion. A developer reuses a bundle in another project and shares it with the community. Bundles can be reused to change everything within Symfony without the necessity to reconfigure the complete framework. It allows changing the core itself to help expand the framework. 
  4. Stable Framework: The company's developers offer support for three years, although they can provide you lifetime support on security-related issues. The company plans to furnish more stability by assuring compatibility among its minor versions. This guarantees the stability and sustainability of the application developed in any version of the framework. Moreover, it can also deliver compatibility with the public APIs for more functional advantages. 
  5. Comfort & Convenience: The Framework delivers a highly functional development environment and conveys to developers the desired level of pleasure and ease. Instead of concentrating on minor functionalities, the framework facilitates developers to focus more on the core functional features of an application. This improves a developer's productivity and makes their task smooth and error-free. Symfony devices, such as the Web Debug Toolbar, bring more convenience for a developer to address errors and security-related issues. 
  6. User Friendly: Symfony is an easy-to-use framework for any developer and is highly convenient for beginners and advanced users, with a host of documentation and support from the company and the community. With an acceptable level of professional support, a newbie can quickly learn the best practices of Symfony Development to help create agile and performance-driven solutions. 

3. What are the components in Symfony?

Symfony Components are a collection of decoupled and reusable PHP libraries. It is open-source software that desires to quicken or speed up the creation and maintenance of web applications, substitute repetitive coding tasks, create powerful and robust applications in an enterprise context, and give developers complete control over the configuration. 

Symfony Components are decoupled libraries for PHP applications. Thousands of projects have been downloaded billions of times and are the foundation of essential PHP projects. Symfony provides components ranging from the simple feature, say file system, to advanced features, events, container technology, and dependency injection. 

4. How to install a Symfony Application using Composer?

Installing & Setting up the Symfony Framework 

To create a Symfony application, make sure PHP 7.1 or higher is installed using Composer. 

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

composer create-project Symfony/website-skeleton my first project 

The website is optimized for conventional web applications. If you are creating 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 

Running your Symfony Application 

>> Move to new project and start the server: 

cd myFirstProject 

php bin/console server:run 

Open your browser and navigate to localhost. If everything is operating, you'll see a welcome page. 

This is a frequently asked Symfony interview question.  

5. List features of Symfony

Symfony is a comprehensive web framework and reusable components that are efficiently and effortlessly used in other applications and frameworks. Fabien Potencier wrote it, and its first version was released on 22 October 2005. 

The prominent Features of Symfony Framework are as below: 

  1. Symfony web framework can be installed with ease 
  2. It is highly scalable 
  3. Symfony is an Open Source web framework 
  4. It has a large and active Community. 
  5. Flexible routing. 
  6. The framework created is based on the MVC design pattern. 
  7. It has a clean and elegant template engine. 
  8. It supports easy testing and has long-term support. 
  9. Online and extensive documentation is available, which helps developers to write code with ease. 

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Description

The Symfony framework is adaptable and eliminates laborious code, cutting down on development time. The goal of Symfony is to assist in the development of software that streamlines the entire process of product development for the developers.

All the traits of a contemporary framework may be found in Symfony. The top PHP frameworks are listed in this blog post, including the Symfony framework.

Symfony is a robust back-end framework used to create sophisticated applications. While Symfony is a popular application framework among open-source developers, many developers still favor the slim Silex micro-framework or the Symfony MicroKernel.

Since Symfony demands strong coding abilities in contrast to Laravel, which does not it can be challenging to learn at times. You must be an excellent coder in order to utilize Symfony to its fullest extent.

A Symfony developer with solid expertise working on this platform will likely discover better employment opportunities. There are less skilled Symfony developers because it takes advanced coding abilities. A developer with Symfony experience will be able to take over and work on projects that use Drupal, EZPublish, and other similar platforms.

Even with great development methods, creating a website is a crucial effort. Web developers have a very busy and difficult life, which includes everything from coding to maintaining the health of the web site. High-end programming framework Symfony offers developers a lot of comfort and ease. Additionally, it enables them to concentrate more on the sophisticated elements of the applications rather than the fundamental ones.

Because Symfony makes overall product development more controllable and customer-focused, many developers choose it. It also provides a variety of tools for monitoring coding faults and security problems. Additionally, it aids developers in figuring out effective solutions.

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