Laravel is one of the most popular and developer-friendly PHP frameworks suitable for both beginners and advanced users. With packages like Vapor, Laravel is a highly scalable framework that allows you to handle thousands of requests using AWS server technology. Here are some frequently asked Laravel interview questions at different levels of expertise that will help you in your interview preparation.

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What Is Laravel Framework?

Laravel is a popular open-source web application framework that supports the development of complex web applications. Its main component is the model-view-controller (MVC), and it incorporates components from different frameworks to help create web applications. It is robust and a convenient tool for developers irrespective of expertise level.

Top Laravel Interview Questions and Answers

Laravel interview questions can be based on core concepts or can be functionality-based. Here are some top Laravel interview questions for your preparation.

Core Concept Laravel Interview Questions

1. What are some of the key features of Laravel?

Some of the key features include:

  1. Eloquent ORM
  2. Database Query Builder
  3. Application Logic
  4. Innovative Template Engine
  5. Reverse Routing
  6. Modularity
  7. Restful Controllers
  8. Automatic Pagination
  9. Unit Testing
  10. IOC Containers

2. Define Composer.

The Laravel Composer is a tool that comprises all dependencies and libraries. It allows the developer to add new packages from the community and manage them, thereby assisting in the development of the project as per the Framework.

After installing Composer, the Framework has to be downloaded, and its contents are extracted into a directory of your server.  

3. Explain MVC Architecture

MVC stands for Model View Controller. It segregates domain, applications, business and logic from the user interface. This is achieved by separating the application into three parts:

  • Model: Data and data management of the application
  • View: The user interface of the application
  • Controller: Handles actions and updates

MVC_Architecture_Laravel_IQ

4. Which templating engine is used in Laravel?

Blade is a powerful templating engine used in Laravel. It makes syntax writing very simple and flexible, providing its structure such as conditional statements and loops. It allows the developer to define sections, extend views and manage loops.

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5. What is Routing?

Routing refers to accepting requests and sending them to the relevant function of the controller. The route is a method of creating the request URL of the application. These URLs are readable and also SEO-friendly. Routes are stored under the /routes folder inside files. The default Routes in Laravel are used for registering:

  • web.php: web routes
  • api.php: API routes
  • console.php: console-based commands
  • channel.php: broadcasting channels supported by the application

6. What is Middleware?

Middleware is the inspecting and filtering mechanism for requests that enter the application.

7. What is the use of Bundles in Laravel?

Popularly known as packages, Bundles are a convenient way to group code. Bundles extend the functionality of Laravel since they can have views, configuration, migration, tasks and more. A Bundle can range from database ORM to an authentication system.

8. Explain Seeding.

Seeding refers to introducing test data to the database for testing the application. Developers can add dummy data to their database tables using a database seeder. Different data types allow the developer to detect bugs and improve performance.

9. What is an Artisan?

Laravel’s command-line interface is called Artisan. It aids the developer by providing commands required for building the application.

10. What is Migration?

Migration is an essential feature for modifying and sharing the application's database schema. It allows the developer to create a table in the database. Migration files store which table is created, updated or deleted.

11. What are Models?

Model is the way used in Laravel to question data to and from the table. A database table can have a Model file that allows the developer to interact with that particular table using Eloquent ORM.

Functionality-Based Laravel Interview Questions

12. How do you check the installed Laravel version of a project?

Using the command PHP Artisan --version or PHP Artisan -v

13. Which Artisan command gives a list of available commands?

PHP Artisan list

14. What is the difference between the Get and Post method?

Both Get and Post are used to retrieve input values in Laravel. A limited amount of data in the header is allowed in the Get method, whereas the Post method allows sending large amounts of data in the body.

15. What are some common Artisan commands in Laravel?  

make:controller – Creates a new Controller file in App/Http/Controllers folder

make:model – Creates a new Eloquent model class

make:migration – Creates a new migration file

make:seeder – Creates a new database seeder class

make:request – Creates a new form request class in App/Http/Requests folder

make:command – Creates a new Artisan command

make:mail – Creates a new email class

make:channel – Creates a new channel class for broadcasting 

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16. Explain the project structure in Laravel.

The following list of directories/folders shows the typical project structure in Laravel

  • app: source code of the application resides here, and it has the following sub-folders:
  1. Consoler
  2. Exceptions
  3. Http
  4. Providers
  • bootstrap: contains files required to bootstrap an application and configure auto-loading
  • config: configuration files such as app.php, auth.php, broadcasting.php, cache.php, database.php and so on are stored in this folder
  • database: holds the database files and has .gitignore file and the following sub-folders:
  1. factories
  2. migration
  3. seeds
  • public: contains files used to initialise the web application
  • resources: The resource directory contains files to enhance the web application and has the following sub-folders:
  1. Assets
  2. Lang
  3. Views
  • routes: includes route definitions
  • storage: stores the cache and session files and has sub-folders:
  1. app
  2. framework
  3. logs
  • test: holds the automated unit test cases
  • vendor: contains the composer dependency packages

17. Give an example to describe how a Route is created.

Routes are created in the routes folder. The files web.php and api.php have the routes that have been created for websites and API, respectively.

Route::get('/', function () {

   return view('welcome');

});

The above Route is defined for the homepage, and it returns the view “Welcome” every time it gets a request for /.

Frequently Asked Questions

18. What is the Latest Version of Laravel?

The latest version of Laravel is 8. It was released on September 8th, 2020.

19. Does Laravel support Bootstrap?

Yes.

20. Name the aggregate methods of the Query Builder.

The Query Builder provides variety of aggregate methods such as:

count(), max(), min(), avg() and sum().

21. How is a Blade template file identified?

Blade template files have .blade.php extension and are located in the resources/views folder.

22. Name the ORM used in Laravel.

Eloquent is the ORM (Object Relational Mapper) used in Laravel.

23. What is Vapor?

A completely serverless deployment and auto-scaling platform for Laravel. It is powered by Amazon Web Services (AWS) Lambda.

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24. Which databases are supported by Laravel?

25. Name some common tools used to send emails in Laravel.

  • SwiftMailer
  • SMTP
  • Mailgun
  • Mailtrap
  • Mandrill
  • Postmark
  • Amazon SES (Simple Email Service)
  • Sendmail

26. What is Forge?

Serve Management & Application Deployment Service.

27. Name a few competitors of Laravel.

  • CodeIgniter
  • Angular
  • Symfony
  • Slim Framework
  • Modx
  • Yii
  • CakePHP
  • Placon
  • Scriptcase
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Conclusion

This article has been designed to help you get ready to crack your interview with this set of Laravel interview questions. Besides explaining the Laravel framework, this article lays out core concept questions and functionality-based questions.

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