Laravel Introduction Example

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

Laravel Getting Started Example

What is Laravel?

Laravel is a PHP framework designed for fast and easy building of web applications. It provides a range of powerful features that allow developers to focus on business logic without worrying about the underlying infrastructure.

Install Laravel

1. Install Composer (PHP Package Manager).
2. Use Composer to install Laravel CLI globally: composer global require laravel/installer .
3. Run laravel new my-app in the project directory to create a new application.

Create a route

Routing defines the relationship between URLs and processing functions in a web application. Create a route in routes/web.php :

<code class="php">Route::get('/welcome', function () { return view('welcome'); });</code>

Write a view

The view contains HTML and PHP code to render the application's interface. Create a view in resources/views/welcome.blade.php :

<code class="php">   <title>Welcome</title>   <h1 id="欢迎来到Laravel">欢迎来到Laravel！</h1>  </code>

Run the application

Run php artisan serve in the project directory to start the development server. Then visit http://localhost:8000/welcome in your browser to view the view.

Database integration

Laravel provides out-of-the-box integration with MySQL, Postgres, and other databases. Use migration to create and modify database tables:

<code class="php">php artisan make:migration create_users_table php artisan migrate</code>

Models and controllers

The model represents an entity in the database and the controller processes HTTP requests.

Create a model in app/Models/User.php :

<code class="php">class User extends Model { // ... }</code>

Create a controller in app/Http/Controllers/UserController.php :

<code class="php">class UserController extends Controller { public function index() { $users = User::all(); return view('users.index', ['users' => $users]); } }</code>

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