How to make part of the address a subdomain?

Question

PHP

Hello. There is a site with various pages with different interfaces, a control panel, etc. There is a domain - domain.com, displays the main pages of the site / project. And there is an account control panel - domain.com/xid/. Please tell me how can I make "xid.domain.com" from "domain.com/xid/"? ServerAlias ​​in apach and nginx is configured, wildcart certificate is received, A record is created, I redirect from the url using:

RedirectMatch 301 ^/xid/(.*)$ https://xid.domain.com/$1

But the problem is this, when redirecting, it shows me the contents of the main page of the site, and not the panel as I need it. For information: the site is written in php using OOP, DI containers and composer. Links are created using routes

PS: for a long time I wanted to delve into this issue, how to still display the same site on subdomains with different content, but, as you can see, without success...

Thank you in advance!

Answer 1

In the application itself, it means that the work of subdomains has not been released.
Check the domain for which the request came.