📅 最后修改于: 2023-12-03 15:17:17.399000 🧑 作者: Mango
Laravel is a modern, powerful and expressive PHP web framework which follows the model-view-controller (MVC) architectural pattern. It was created by Taylor Otwell in 2011 and has since become one of the most widely used PHP frameworks in the world.
To start building applications using Laravel, you need to have PHP installed on your machine. You can download the latest version of PHP from the official website (https://www.php.net/downloads.php).
Once you have PHP installed, you can install Laravel using Composer. Composer is a dependency manager for PHP and is used to install and update packages that your application depends on.
To install Laravel using Composer, simply run the following command:
composer create-project --prefer-dist laravel/laravel myapp
Replace "myapp" with the name of your application. This will create a new Laravel application in a directory named "myapp".
Laravel's routing system allows you to define the routes for your application. Routes are used to map URLs to controller actions.
Here's an example of a route that maps the URL "/hello" to a controller action:
Route::get('/hello', function () {
return 'Hello, World!';
});
This route will respond with the string "Hello, World!" whenever a user visits the URL "/hello".
Controllers are used to handle user requests and return responses. They contain the logic for your application.
Here's an example of a controller that returns a view:
class HomeController extends Controller
{
public function index()
{
return view('home');
}
}
In this example, the index method returns a view named "home". Views are used to display data to the user.
Views are used to display data to the user. They contain HTML, CSS and JavaScript.
Here's an example of a view:
<!DOCTYPE html>
<html>
<head>
<title>My website</title>
</head>
<body>
<h1>Welcome to my website</h1>
<p>This is my Laravel application.</p>
</body>
</html>
This view displays a heading and a paragraph of text. Views can also contain variables that are passed from the controller.
Laravel is a powerful and intuitive PHP framework that makes it easy to build web applications. With its elegant syntax, Object-oriented libraries, Model-View-Controller (MVC) architecture, Artisan CLI, Blade templating engine, Eloquent ORM and database migrations, Laravel is the framework of choice for developers who want to build modern, scalable and maintainable web applications.