Yii extension component writing method example analysis PHP

In this article, we will discuss how to write extension components for Yii framework using PHP. We will demonstrate this process through an example and provide the corresponding source code. Here's what the extension we're going to create does:

1. Example functionality: We will create a widget called "HelloWidget" that will display a simple greeting and accept an optional parameter to customize the content of the greeting.

2. Extension component structure: We will organize our extension components according to the recommended structure of Yii framework. We will create a folder called "hello" inside the "extensions" folder and create the following files in it:

   • HelloWidget.php: File containing the HelloWidget class. This class will implement the functionality of our widget.

   • views/hello.php: Contains the views file for our widget.

Now let's create this extension step by step:

Step 1: Create HelloWidget class

In the "extensions/hello/HelloWidget.php" file, we will define the HelloWidget class. This class will inherit from the CWidget class of the Yii framework and override some of its methods.

<?php

class HelloWidget extends CWidget