PHP Laravel Framework Construction

With the development of Internet technology, Web applications play a vital role in modern life and business. In response to this trend, various web development frameworks have emerged. Among them, the PHP framework Laravel has become one of the most popular web application development frameworks because of its simplicity, ease of use, flexibility and openness. This article will introduce how to use the Laravel framework to build your web application.

Prerequisites

Before officially starting, make sure your computer has the following applications installed:

1. The latest version of PHP
2. Composer, it is a package manager for PHP
3. MySQL database

If these applications are not installed, please follow the official guide to install them first and ensure that you can run these applications correctly .

Step 1: Install Laravel

Installing Laravel is very simple, just run the following command in the terminal window:

composer global require "laravel/installer"

Wait until the installation is completed, you can use itlaravel newCommand to create a Laravel application:

laravel new myapp

This will create a Laravel application named myapp in the current directory. You can replace it with any name you want.

Step 2: Configure Laravel

Before running the Laravel application, you need to make some necessary configurations. In the myapp directory, open the .env file and set your database connection information:

DB_HOST=localhost DB_DATABASE=myapp DB_USERNAME=yourusername DB_PASSWORD=yourpassword

Here,DB_HOSTis your database server host name,DB_DATABASEis your database name,DB_USERNAMEis your database username,DB_PASSWORDis your database password. After saving the configuration file, you can run the following command to generate the application key:

php artisan key:generate

Next, you need to create a corresponding empty database in the database.

Step 3: Run Laravel

When you are ready, you can start the application using the following command:

php artisan serve

Then you can access it in your browserhttp://127.0.0.1:8000, see Laravel’s welcome page.

Step 4: Create controllers and views

Now, you can create your web application based on Laravel. In Laravel, the controller is the core code block that handles requests, and the view is the template that displays the results. Below is a simple example.

First, you need to create a controller. Run the following command:

php artisan make:controller HelloController

This will create a controller named HelloController, located in the app/Http/Controllers directory. Next, open the controller and add the following code:

        

         Copy after login
        
       

Here, theindexmethod returns a view (template file) named "hello", located in the resources/views directory. Next, you need to add some HTML code to the view file hello.blade.php:

    
  
Hello Laravel!
  

Now you can run your Laravel application and visithttp://127.0.0.1 :8000/hello, and saw the simple message Hello Laravel!

Conclusion

In this article, we introduced how to use the Laravel framework to build web applications. Laravel provides features such as simplicity and ease of use, powerful functions, flexibility and openness, security and reliability, and can be well adapted to web applications of various sizes. I hope this article provides some help to beginners and Laravel enthusiasts.

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