What is the application structure of yii framework?

Yii is organized using the Model-View-Controller (MVC) design pattern. Yii uses this mature technology in WEB programming to better separate the logic layer and presentation layer.

The model represents the data, business logic and rules; the view displays the output of the model; the controller accepts the input and output and transforms it Commands for models and views.

In addition to MVC, Yii applications also have the following parts: (Recommended learning: yii framework)

Entry script: A PHP script that can be directly accessed by end users and is responsible for starting a request processing cycle.

Application: An object that can be accessed globally, manages and coordinates components to complete requests.

Should Components used: Objects registered in the application provide different functions to complete requests.

Module: An independent package containing a complete MVC structure. An application can be composed of multiple modules.

Filter: The controller needs to trigger code execution before or after processing the request.

Widget: An object that can be embedded in a view, can contain controller logic, and can be called repeatedly by different views.

The diagram below shows the static structure of a Yii application:

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