How to disable all unnecessary parameters in the url in Yii2, displaying 404?

Question

Yii

Actually a subject. Suppose the user writes site.com/index.php?abc=123 instead of site.com/index.php and then there should be a 404 error. The default code is 200.

Answer 1

Yii:$app->request->get() - Returns GET parameter with a given name. If name isn't specified, returns an array of all GET parameters.
www.yiiframework.com/doc-2.0/yii-web-request.html#...
Accordingly, you can write a filter that will track all left parameters and issue a 404 error.