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How to use yii framework

Apr 18, 2025 pm 10:21 PM
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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

How to use yii framework

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(yè)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(lái)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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