Pretty URL problem, how to fix?

Question

htaccess

Options +FollowSymLinks
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^(.*)$ index.php?action=$1 [QSA,L]

On my site, everything is implemented through index.php with a beautiful view of the site.ru/cabinet type, which replaces site.ru/index.php?action=cabinet
But I ran into such a problem as the need for a site.ru/index link. php?action=cabinet&userId=4
How to turn it into site.ru/userId/4 ?

Answer 1

RewriteCond %{QUERY_STRING} (^|&)action\=cabinet($|&)
RewriteCond %{QUERY_STRING} (^|&)userId\=4($|&)
RewriteRule ^index\.php$ /userId/4? [L,R=301]

Answer 2

RewriteRule ^(.*)$ index.php?$1 [QSA,L]
And inside, parse the incoming parameters, the first will always be an action, the second - some value