Help with mod_rewrite

Question

Should request: site.ru/index.php?go=23&page=bla alter the form: bla.site.ru/index.php?go=23

That is, the user types in browser bla.site.ru/index.php?go=23 and all information is passed to scripts that request site.ru/index.php?go=23&page=bla

It is prohibited to use redirect

Answer 1

Try this:

RewriteCond %{HTTP_HOST} ^([^.]+)\.example\.com$
RewriteRule ^ http://example.com%{REQUEST_URI}?page=%1 [L,QSA]