How to use Yii7 framework in php?

Yii7 framework is a high-performance PHP framework, its design concept is efficient, flexible, safe and easy to expand. If you are using PHP language for web development and are looking for a good framework, Yii7 framework will be a good choice. So how to use Yii7 framework? This article will introduce it to you in detail.

1. Install the Yii7 framework

Before using the Yii7 framework, we need to install it first. The installation of the Yii7 framework can be completed through Composer. You only need to enter the root directory of the project in the terminal and execute the following command:

composer require yiisoft/yii-core:^7.0.0@rc

After the installation is complete, you can start using the Yii7 framework.

2. Create a new Yii7 application

Creating a new web application using the Yii7 framework is very simple, we only need to execute the following command:

yii app/create myapp

This will create a new Yii7 application named "myapp" in your working directory.

3. Configuring Yii7 Application

After you create a new Yii7 application, you need to complete some basic configuration. In the root directory of the application, there will be a directory named "config". The main.php file in this directory is the main configuration file of the application. You need to configure it accordingly according to the actual situation.

For example, you can configure database connection information, add modules or components, etc. The following is an example of how to configure database connection information:

return [
    'components' => [
        'db' => [
            'class' => yiidbConnection::class,
            'dsn' => 'mysql:host=localhost;dbname=mydatabase',
            'username' => 'myusername',
            'password' => 'mypassword',
            'charset' => 'utf8',
        ],
        // ... other components ...
    ],
    // ... other configurations ...
];

4. Create a controller

In the Yii7 framework, the controller is one of the core components for processing web requests . Controllers are usually stored under "controllers" and can be created by inheriting the yiiwebController class. Here is a simple controller:

namespace appcontrollers;

use Yii;
use yiiwebController;

class SiteController extends Controller
{
    public function actionIndex()
    {
        return $this->render('index');
    }
}

In the above example, we created a controller named SiteController and defined an action named actionIndex. This operation renders a view file named "index".

5. Create a view

The view is a key part of generating output in the controller, and it is usually stored in the "views" directory. For example, we can create a simple "index" view like this:

<h1>Welcome to my Yii7 application!</h1>

After creating the view, we need to reference it in the controller. In the controller we defined, we use the "$this->render()" method to render the view.

6. Run the application

After completing the above steps, you can now run your Yii7 application. Start the development server by executing the following command in the console:

./yii serve

Then, visit http://localhost:8080 in your browser and you will see a welcome page.

7. Other learning resources

The above are the basic steps for using the Yii7 framework. If you need more detailed documentation and learning resources, you can refer to the official documentation https://www .yiiframework.com/doc/guide/2.0/zh-cn.

In general, the Yii7 framework is a high-performance, efficient, flexible, secure and easy-to-extend PHP framework. If you are looking for a reliable PHP framework, I strongly recommend that you try the Yii7 framework.

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