Help with Regular Expression (REGEX)

I'm trying to match the following URL's:

http://site.com/category/page/number/?s=
http://site.com/page/number/?s=TEXT

and redirect it to:

http://site.com/?s=TEXT

Any help would be appreciated! Thanks

 

I've tried using

/page/[0-9]+/?s=*

and pointing it to

/?s=*

But it didn't work. Thanks guys!

 

How and where are you matching them? .htaccess? Within the pages? ...?

Anyway, the pattern would be something like:

'~^http://(www\.)?site\.com/([\w-]+/)?page/\d+/\?s=(.*?)$~'

PHP:

 

sometimes querystring is to be checked separately

RewriteCond %{QUERY_STRING}	^(.*)s=(.*)$
RewriteRule ^(category)?/page/number/$ /?s=%2	

Code (markup):

 

Thanks guys! Got it to work, my problem was I forgot to escape the ? character.

I used

/page/(0-9)+/\?s=*

And 301 redirect it to

/?s=*

I was using this in the WordPress redirection plugin.