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Top Laravel Interview Questions and Answers (Updated)

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Top Laravel Interview Questions and Answers (Updated)
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What is Laravel?

Laravel is a structure that allows a user to choose and create programs. Everything from giving a form to the software and joining it with different application programs is covered by Laravel. It is a freely available PHP framework with a focus on writing codes that help to create personalized web software quickly and efficiently.

What are the pros and cons of using the Laravel Framework?

The pros and cons of the Laravel Framework are:

Pros

  • The blade template engine speeds up tasks like a compilation and allows users to add the latest features easily.
  • “Bundled modularity” allows reuse of code without any trouble.
  • It is easy to understand and create database relationships.
  • The Artisan CLI comprising advanced tools for task and migrations.
  • The documentation allows reverse routing.

Cons

  • It can be slow.
  • It is a new platform for many developers.
  • It gets difficult to extend codes and classes for amateurs.
  • Limited community support compared to other platforms.
  • Reverse routing and other methods are pretty complicated.

Describe Events in Laravel?

Events in Laravel are observer implementations that allow subscription to events as well as listen to updates about different events within the application. The event classes are saved in the app/Events directory and the listeners are saved in app/Listeners. They may be generated with the help of Artisan console commands. They go a long way in decoupling several aspects of an application due to the multiplicity of listeners for a single event.

How to check Laravel version?

The steps to check the version of Laravel is-

  • Open the folder Vendor.
  • Go to Laravel and then to Framework.
  • In SRC, click on Illuminate.
  • Open Applications from Foundation.
  • The version will be displayed here.

What are Validations?

Validations are approaches used by Laravel to validate incoming data within an application. The base controller class of Laravel uses the trait ValidatesRequests by default to validate an incoming HTTP request with the help of powerful validation rules.

How to create a controller in Laravel?

The syntax used to create a controller in Laravel is as follows-

<?php
namespace AppHttpControllers;
use AppUser;
use AppHttpControllersController;
class UserController extends Controller

{
    /**

     * Show the profile for the given user.
     *
     * @param  int  $id
     * @return View
     */
    public function show($id)

    {
        return view('user.profile', ['user' => User::findOrFail($id)]);

    }
}

How to remove public from URL in Laravel?

The steps to remove the public from URL in Laravel are-

  • Rename the file in the Laravel root directory.
  • Update the .htaccess in the root folder using the code-

Options -MultiViews -Indexes

RewriteEngine On

# Handle Authorization Header

RewriteCond %{HTTP:Authorization} .

RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

# Redirect Trailing Slashes If Not A Folder...

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_URI} (.+)/$

RewriteRule ^ %1 [L,R=301]

# Handle Front Controller...

RewriteCond %{REQUEST_URI} !(.css|.js|.png|.jpg|.gif|robots.txt)$ [NC]

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_FILENAME} !-f

RewriteRule ^ index.php [L]

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_URI} !^/public/

RewriteRule ^(css|js|images)/(.*)$ public/$1/$2 [L,NC]

What is middleware in Laravel?

Middleware in Laravel is a bridge that connects request to a response. It filters and verifies the authentication of the user of the application. Only the authenticated users are redirects to the home page.

How to update composer in Laravel?

The steps to update the composer in Laravel are:

  • In the composer.json file at the root of your git repo, run the composer update.
  • Re-generate the composer.lock file.
  • Transfer the composer.lock file to the git repository.
  • Click on 'Tools in the Engine Yard Cloud' and go to Dashboard.
  • Select an environment name.
  • Click on Deploy.

How to run Laravel project in xampp?

The steps to run Laravel in xampp are-

  • Instal xampp in C drive.
  • Create a Laravel folder in htdocs under the xampp folder in C drive.
  • Redirect to Laravel with cmd prompt.
  • Use the below command 
composer create-project laravel/laravel first-project --prefer-dist
  • Redirect to localhost/laravel/first-project/public/.

How to clear cache in Laravel?

The syntax to clear cache in Laravel is:

  • php artisan cache: clear
  • php artisan config: cache
  • php artisan route: cache

What is homestead Laravel?

Laravel Homestead is the official, pre-packaged, disposable Vagrant box that delivers a development environment to use without the additional need to install PHP, a web server, or any other server software on the machine.

What is namespace in Laravel?

Namespace in Laravel allows a user to group the functions, classes and constants under a specific name.

How to use curl in Laravel?

The step to use curl in Laravel are:

  • Add the curl package to run curl request method on the cmd or terminal.
  • Create a route from routes/web.php file to get curl request.
  • Add a different getCURL() in HomeController.
  • It can be used to run post, put, patch, and delete request.

What is facade in Laravel?

A facade in Laravel is a class that allows static-like interface for the services in a container. They serve as a proxy, depending on the documentation, to access the core implementation of the services of the container.

What is Laravel Route?

A Route is a process which is used to send all your application URL to the associated controller function. The most primary or basic routes in Laravel simply take URI and its Closure.

What is a migration in Laravel?

Migrations in Laravel refer to files that comprise of class definitions along with an up() and down() method. The up() method is executed when the relates to changes in the database while the down() method helps to undo the changes.

Note: To update databases, new migrations must be created.

What is CSRF token in Laravel?

Cross-Site Forgery or CSRF in Laravel detect unauthorized attacks on web applications. by the authenticated users of a system. The built-in CSRF plug-in created CSRF tokens to verify all operations and requests sent an active authenticated user.

What is Eloquent ORM in Laravel?

The Eloquent ORM in Laravel is a built-in ORM implementation that permits working database objects and relationships through eloquent and easy-to-read syntax. It assumes the id as the primary key for a record and that the model is representing a table with an id field.

What is Laravel Forge?

Laravel Forge is a tool that helps in organising and designing a web application. Although the manufacturers of the Laravel framework developed it, it can automate the deployment of every web application that works on a PHP server.

What are the differences between Codeigniter and Laravel?

The differences between Codeigniter and Laravel are-

Codeigniter

Laravel

It follows the development principle Wiky Way.

It follows the development principle Don’t Repeat Yourself.

It can produce active-record, model-view-controller and HMVC design patterns.

It can produce active-record, model-view-controller, dependency injection, singleton, observer, event-driven, MTV, factory, restful, facade and HMVC design patterns.

It needs 256 MB memory.

It needs 1 GB memory.

It is recommended for beginners.

It is useful for all categories of developers from novice to pro.

It does not support ORM.

It supports ORM.

It does not have inbuilt user authentication.

It has built user authentication.

Inbuilt CLI support absent.

Inbuilt CLI support present.

How to create middleware in Laravel?

The command used to create middleware in Laravel is:

php artisan make: middleware <middleware-name>.