How to create simple widgets using yii2.0

This article mainly introduces the method of creating simple widgets in yii2.0, and analyzes the basic creation and use methods of widgets in Yii in the form of examples. Friends in need can refer to the following

The examples in this article describe Yii2.0 implements the method of creating simple widgets. Share it with everyone for your reference, the details are as follows:

namespace yii\widgets;
use yii\base\Widget;
use yii\helpers\Html;
class HelloWidget extends Widget
{
public $message;
public function init()
{
parent::init();
if ($this->message === null) {
$this->message = 'Hello World';
}
}
public function run()
{
return Html::encode($this->message);
}
}

Calling method

<?php
use app\components\HelloWidget;
?>
<?= HelloWidget::widget([&#39;message&#39; => &#39;Good morning&#39;]) ?>

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