How to use a method as a parameter (id)?

Question

PHP

Hello everyone)
I have a url like this " site.com/articles/bla-bla " The
URL is broken and as a result articles is a file. and bla-bla is a function from a file.
Everything works as it should. But how can I use the second segment of the site url as a parameter?
I want something like this: site.com/articles/($id)
Maybe in the .htaccess file (RewriteRule) set up before the line that redirects everything to "index.php"?
Thank you all in advance.
PS
Frameworks, etc. Do not offer.

Answer 1

https://github.com/nikic/FastRoute