echo Html::hiddenInput('csrfToken', $csrfToken); // Output:
echo Html::hiddenInput('myKey', 'myValue', ['id' => 'hiddenField']); // Output:This code generates an HTML hidden input field with name 'myKey' and value 'myValue' along with optional parameters such as 'id' and its value using Yii's Html::hiddenInput() method. This field can then be used for passing values that are not required to be displayed on the page. Package/library: Yii Framework.