How to check that the request was sent with fetch in Yii2?

Question

Yii

There are functions like isAjax, but there is no function that would check that the request was sent with fetch. How to check it on the server side - in PHP or Yii2 capabilities? It is necessary to exclude (not completely, but to make an obstacle) the possibility of data parsing.

Answer 1

Apparently by the sec-fetch headers:

screen

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Only how it will save from curl requests is a question, of course, especially since fetch, that ajax can only be done from the same domain, if of course you have a restriction on Access-Control-Allow-Origin.