How to make a notification?

Question

Yii

I need if a record has appeared or the status is new, a notification appears. How to implement it

Answer 1

Based on your question, it is difficult to understand what you need, but it is possible:

Yii::$app->session->addFlash('success','Ваш вопрос добавлен, гуляйте лесом');

Answer 2

Look at the topic of push notifications. There were several articles on Habré and on the toaster too. For example, you can search here:
https://toster.ru/tag/push notifications/questions