My htaccess redirect knowledge is somewhat weak, so I was hoping to get some help here.

I currently have the following redirect, which works well:

# remove trailing slash
RewriteRule ^(.*)/$ /$1 [L,R=301]

# redirect to clean URL
RewriteCond /%{REQUEST_FILENAME}.php -f
RewriteRule ^([a-zA-Z0-9_-\s]+)$ /$1.php

This takes a URL like www.mysite.com/about to www.mysite.com/about.php

Now I would like to keep this behavior, but add parameters (if applicable), as such:

www.mysite.com/about => www.mysite.com/about.php

www.mysite.com/gallery/1 => www.mysite.com/gallery.php?id=1

If possible, I might like to expand this system to 2 or more parameters, as such:

www.mysite.com/gallery/1/2 => www.mysite.com/gallery.php?id=1&section=2

So the pattern would be:

• First URL segment redirects to a PHP file
• (Optionally) the second segment gets added as the id parameter
• (Optionally) the third segment gets added as the section parameter