Free and open source PHP Web Framework Yii Getting Started Guide Installation Prerequisites: PHP 7.2, Composer Create Application: composer create-project yiisoft/yii2-app-basic your-app-name Project Structure: Contains assets, config, controllers, models, runtime, views, web, etc. Create Controller: Create a class in the controllers directory, such as SiteController, define operation methods and create a model: In models
Yii Framework Guide
Introduction
Yii is a free, open source PHP web framework for building high-performance, scalable, and secure web applications. It is lightweight, fast and easy to use.
getting Started
To get started with Yii, you need:
- Install PHP 7.2 or later.
- Install Composer.
- Create a new Yii application:
composer create-project --prefer-dist yiisoft/yii2-app-basic your-app-name.
Project structure
A basic Yii application contains the following directories:
-
assets: Static files (such as CSS, JavaScript, images). -
config: Application configuration. -
controllers: A class that controls application behavior. -
models: Classes representing database tables. -
runtime: The directory where temporary files are stored. -
views: Contains the PHP template file for the front end of the application. -
web: a public web directory.
Create a controller
The controller is the class that handles user requests. To create a controller, create a new file in the controllers directory, such as SiteController.php :
<code class="php">namespace app\controllers; use yii\web\Controller; class SiteController extends Controller { public function actionIndex() { // 這是你的主頁面操作} }</code>
Create a model
A model is a class representing a database table. To create a model, create a new file in the models directory, such as User.php :
<code class="php">namespace app\models; use yii\db\ActiveRecord; class User extends ActiveRecord { public $username; public $email; public $password; }</code>
Define the route
The route maps the URL to the controller action. Add the following code to the config/web.php file:
<code class="php">return [ 'components' => [ 'urlManager' => [ 'rules' => [ '/' => 'site/index', ], ], ], ];</code>
Using templates
Template is used to generate the front end of the application. Add the following code in views/site/index.php :
<code class="php"><h1>歡迎來到Y(jié)ii 應(yīng)用程序！</h1></code>
Run the application
To run the application, enter the following command in the terminal:
<code>php yii serve</code>
The application will run on http://localhost:8080.
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