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php laravel framework construction

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Release： 2023-05-26 13:43:07

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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:

The latest version of PHP
Composer, it is a package manager for PHP
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"

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

laravel new myapp

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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

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Here, DB_HOST is your database server host name, DB_DATABASE is your database name, DB_USERNAME is your database username, DB_PASSWORD is your database password. After saving the configuration file, you can run the following command to generate the application key:

php artisan key:generate

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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

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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

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

<?php

namespace AppHttpControllers;

use IlluminateHttpRequest;

class HelloController extends Controller
{
    public function index()
    {
        return view('hello');
    }
}

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Here, the index method 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:

<!DOCTYPE html>
<html>
<head>
    <title>Hello Laravel</title>
</head>
<body>
    <h1>Hello Laravel!</h1>
</body>
</html>

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Now you can run your Laravel application and visit http://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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