50+ Most Laravel Interview Quetion and Answer for Fresher |

50+ Laravel interview questions along with their answers tailored for fresher candidates:

1. What is Laravel?

• Laravel is a popular open-source PHP web framework used for building web applications following the Model-View-Controller (MVC) architectural pattern.

1. What are the key features of Laravel?

• Some key features include a modular packaging system with a dedicated dependency manager, a variety of ways for accessing relational databases, utilities for application deployment, and maintenance, as well as its orientation towards syntactic sugar.

1. What is Composer in Laravel?

• Composer is a dependency manager for PHP, allowing you to declare the libraries your project depends on and it will manage them for you.

1. What is Blade in Laravel?

• Blade is the simple and powerful templating engine provided with Laravel. It allows you to write simpler and more readable PHP code within your views.

1. Explain Middleware in Laravel.

• Middleware acts as a bridge between a request and a response. It provides a convenient mechanism for filtering HTTP requests entering your application.

1. What is the difference between route::get and route::post in Laravel?

• route::get is used for defining routes for HTTP GET requests, while route::post is used for defining routes for HTTP POST requests.

1. What is Eloquent in Laravel?

• Eloquent is Laravel’s Object Relational Mapping (ORM) system. It provides a beautiful, simple ActiveRecord implementation for working with your database.

1. Explain migrations in Laravel.

• Migrations are like version control for your database, allowing you to modify and share the application’s database schema. They are typically paired with Laravel’s schema builder to easily build your application’s database schema.

1. What are Eloquent Relationships in Laravel?

• Eloquent Relationships are methods on your Eloquent model classes that define how the models are related to each other. Examples include hasOne, hasMany, belongsTo, belongsToMany, etc.

1. How do you define a route in Laravel?
   • You can define a route using the Route facade. For example:
   Route::get('/example', function () { return 'This is an example route.'; });
2. What is CSRF protection in Laravel?
   • Cross-Site Request Forgery (CSRF) protection in Laravel is a middleware that protects your application from cross-site request forgery attacks.
3. Explain the use of CSRF token in Laravel.
   • Laravel automatically generates a CSRF token for each active user session managed by the application. This token is used to verify that the authenticated user is the one actually making the requests to the application.
4. What is the purpose of a service container in Laravel?
   • The service container in Laravel is used for managing class dependencies and performing dependency injection.
5. What is dependency injection?
   • Dependency Injection is a technique in which one object supplies the dependencies of another object. It helps in making the code more maintainable, testable, and scalable.
6. Explain method injection in Laravel.
   • Method injection is a type of dependency injection where dependencies are injected into a method’s signature. Laravel’s service container automatically resolves these dependencies.
7. What is the purpose of Laravel Homestead?
   • Laravel Homestead is an official, pre-packaged Vagrant box that provides a development environment for Laravel applications.
8. What is Laravel Dusk?
   • Laravel Dusk is a browser automation and testing tool for Laravel applications. It provides an expressive and easy-to-use API for interacting with your application’s frontend.
9. Explain Laravel Scout.
   • Laravel Scout is a Laravel package that provides a simple, driver-based solution for adding full-text search to your Eloquent models.
10. What is Laravel Passport?
    • Laravel Passport is an OAuth2 server and API authentication package for Laravel. It provides a full OAuth2 server implementation for your Laravel application.
11. What is Laravel Cashier?
    • Laravel Cashier is a package for managing subscription billing with Stripe. It provides an expressive, fluent interface to Stripe’s subscription billing services.
12. What is Laravel Valet?
    • Laravel Valet is a development environment for macOS users. It configures your Mac to always run Nginx in the background when your machine starts. Then, using DnsMasq, Valet proxies all requests on the *.test domain to point to sites installed on your local machine.
13. Explain Laravel Forge.
    • Laravel Forge is a server provisioning and deployment tool for PHP applications. It simplifies the process of deploying, configuring, and managing servers on popular cloud hosting providers like AWS, DigitalOcean, and Linode.
14. What is Laravel Mix?
    • Laravel Mix is an API for defining Webpack build steps for your Laravel application. By default, Laravel’s package.json file includes a few common CSS and JavaScript dependencies.
15. How do you run migrations in Laravel?
    • You can run migrations using the migrate Artisan command. For example:
    php artisan migrate
16. Explain the purpose of the App\Providers\AppServiceProvider in Laravel.
    • The AppServiceProvider in Laravel is used to register application service providers. These service providers are used to boot up and configure application services.
17. What are the different types of relationships in Eloquent?
    • Eloquent supports several types of relationships including one-to-one, one-to-many, many-to-one, many-to-many, has-one-through, has-many-through, and polymorphic relations.
18. How do you create a new model in Laravel?
    • You can create a new model using the make:model Artisan command. For example:
    php artisan make:model Post
19. Explain the use of the with method in Eloquent.
    • The with method in Eloquent is used for eager loading relationships. It allows you to load specified relationships along with the model query.
20. How do you retrieve data from the database using Eloquent in Laravel?
    • You can retrieve data from the database using Eloquent by calling methods such as all(), find(), first(), get(), etc., on the model class.
21. What is the purpose of the findOrFail method in Laravel?
    • The findOrFail method is used to retrieve a model by its primary key. If the model does not exist, it will throw a ModelNotFoundException.
22. Explain the purpose of Laravel’s artisan command.
    • Laravel’s artisan command-line tool provides a number of helpful commands for building your application, managing migrations, running tests, and more.
23. How do you create a new migration in Laravel?
    • You can create a new migration using the make:migration Artisan command. For example:
    php artisan make:migration create_users_table
24. Explain the purpose of the --table option in Laravel migrations.
    • The --table option allows you to specify the name of the table you want to
    modify when generating a migration.
25. What is the purpose of the --create option in Laravel migrations?
    • The --create option allows you to specify that you want to create a new table when generating a migration.
26. How do you define a foreign key constraint in a Laravel migration?
    • You can define a foreign key constraint using the foreign method in a migration’s up method. For example:
    Schema::table('posts', function (Blueprint $table) { $table->foreign('user_id')->references('id')->on('users'); });
27. Explain the purpose of the --model option in Laravel migrations.
    • The --model option allows you to specify the name of the model associated with the migration when generating a new migration file.
28. What is method chaining in Laravel?
    • Method chaining is a technique where multiple methods can be called in a single statement, each method affecting the object in some way. Laravel’s query builder and Eloquent ORM heavily utilize method chaining.
29. How do you define a route parameter in Laravel?
    • You can define a route parameter by enclosing the parameter name in curly braces {} in the route definition. For example:
    Route::get('/user/{id}', function ($id) { // });
30. Explain the purpose of the belongsToMany relationship in Eloquent.
    • The belongsToMany relationship is used to define a many-to-many relationship between two models. It is typically used when a model can belong to multiple instances of another model and vice versa.
31. What is Laravel Mix? How do you use it?
    • Laravel Mix is an API for defining Webpack build steps for your Laravel application. You can use it by defining your build steps in the webpack.mix.js file located in the root directory of your Laravel application.
32. What is the purpose of the artisan serve command?
    • The artisan serve command is used to start a development server for your Laravel application. By default, it will serve your application on http://localhost:8000.
33. Explain the purpose of the --seed option in Laravel migrations.
    • The --seed option allows you to specify that you want to run seeders after running the migration.
34. What is the purpose of the --path option in Laravel migrations?
    • The --path option allows you to specify a custom migration path when running migrations.
35. Explain the purpose of the whereHas method in Laravel Eloquent.
    • The whereHas method is used to constrain the query based on the existence of a relationship. It allows you to filter your query based on the existence of related models.
36. What is Laravel Sanctum?
    • Laravel Sanctum is a simple package for API token authentication. It provides a featherweight authentication system for SPAs (single-page applications), mobile applications, and simple, token-based APIs.
37. What is the purpose of Laravel Vapor?
    • Laravel Vapor is a serverless deployment platform for Laravel applications. It allows you to deploy your Laravel applications to AWS Lambda without managing servers.
38. Explain the purpose of the hasOneThrough relationship in Eloquent.
    • The hasOneThrough relationship is used to define a one-to-one relationship through another table. It allows you to access a related model through a intermediate model.
39. What is the purpose of the firstOrCreate method in Laravel Eloquent?
    • The firstOrCreate method is used to retrieve the first model matching the specified attributes, or create a new model with those attributes if one does not exist.
40. Explain the purpose of the withoutGlobalScope method in Laravel Eloquent.
    • The withoutGlobalScope method is used to remove a global scope from the query. Global scopes allow you to add constraints to all queries for a given model.
41. What is the purpose of the Route::resource method in Laravel routing?
    • The Route::resource method is used to automatically generate routes for a resourceful controller. It generates routes to handle CRUD operations on the specified resource.