Confusing rewrite rule: Need help!

Question

I need a rewrite rule that will do an internal redirect from: <domain>/directory/<anything>/<anything>.php to: <domain>/directory/<anything>.php with <anything> passed as a parameter, and it needs to leave all other parameters alone.

I get headaches from mod_rewrite. My issue is <anything>.php, I cannot find any examples for anything like that.

Example: domain.com/directory/something/lol.php?param=value ought to internally redirect to domain.com/directory/lol.php?param=value&someotherparam=something

Thanks for the help! I have read through many tutorial sites, but I am in the dark here...

EDIT: Code tags added since it wasnt showing up properly >.>

Not all pages will have other parameters passed, some might have only one, some might have many. This is another bit that confuses me...

Answer 1

RewriteEngine On

RewriteBase /
RewriteRule ^rewrite/(.+)/lol.php$ rewrite/lol.php?someotherparam=$1 [QSA,R,L]

Answer 2

RewriteEngine On

RewriteBase /  
RewriteRule ^directory/([^/]+)/([^/]+)\.php$ directory/$2.php?someotherparam=$1 [QSA,L]

This will redirect domain.com/directory/something/lol.php?param=value to domain.com/directory/lol.php?param=value&someotherparam=something, as requested. (I'll note that currently, none of the other replies do so.)