php redirect

I have a link like this: http://mysite.com/r/user/ and/or http://mysite.com//blah/r/user/

I need this to redirect to http://mysite.com/?r=user and/or http://mysite.com/blah/?r=user

The blah part is a potential subfolder on my site.

I can't find the right way to do this kind of redirect.. I tried with htaccess and php but without success. Any help would be appreciated.

Thanks.

 

Try this:

RewriteEngine On
RewriteRule ^r/([a-z]+)/([a-z]+)/$ /\$1/?r=$2[L]
RewriteRule ^r/([a-z]+)/$ /\?r=$1[L]

Code (markup):

The first one matched the URL with folder name. And the second one matches those without folder name.
I haven't tested it. But I think it would work.