How to make Az filter under request->get in Yii2?

Question

Yii

Please tell me how to filter the az string received with GET
Yii::$app->request->get('mail');
The string is directly passed to the view and displayed there.
As an option to put Smarty, but maybe you can somehow use Yii2?

Answer 1

What are you going to filter from? In general, there is such a thing as Html::encode() if you need to use the string from the GET parameter in the form.

Answer 2

so you have a request:
localhost/[email protected]
means the controller is triggered and the action, apparently named success-reg
in the controller:

public function actionSuccessReg($email){
return $this->render('вьюха', ['email'=>$email]);
}

everything in the view you have a variable containing email
If this is not what you need - describe in more detail, preferably with your code