How to configure .htaccess for links like my-site.ru/eVy4oi to be equivalent to my-site.ru/index.html/eVy4oi?

Question

htaccess

How to configure .htaccess for links like my-site.ru/eVy4oi to be equivalent to my-site.ru/index.html/eVy4oi or my-site.ru/index.html?mykey=eVy4oi ?
In short, to always open index.html, and I will deal with URIs further in PHP.

Answer 1

I studied the issue myself.

RewriteEngine On
RewriteBase /
RewriteRule ^([0-9A-z]{6})$ index.html?mykey=$1