How to set up nginx for domain substitution?

Question

Nginx

Configure nginx so that when yourdomain/google or yourdomain/vk is entered , the corresponding sites open, without changing the Url and to work with any option: yourdomain/****** .

Answer 1

No way.

Answer 2

do it in php
php proxy is very easy. and it will be easy to do.
https://github.com/zounar/php-proxy
place it in PHP 404 on your site.
All you need to do is add a line of code with the logic for transferring a domain to a proxy, but this is just 1-2 lines