How to get parameters from VK API?

Question

PHP

In general, I send a request to the VK API to receive a token and other data. The data is being sent to the redirect_uri, but not in the way I intended.
As I assumed: site.com/url/?a=34&b=32
As it really is: site.com/url#a=34&b=32
Accordingly, due to the fact that there was no request to the server (# is essentially an anchor) , $_GET, $_REQUEST and similar arrays are empty. How to get this data using PHP (and can it be done)?

Answer 1

By means of PHP - in any way. By means of JS -- please .