Mod Rewrite with multiple parameters

Question

I'm trying to setup a rewrite rule so that any text in place of a subdomain will be parameter one and any text after the first forward slash will be parameter two but I'm struggling with regex and am unsure about rewrite terminology.

For example, if someone requested:

joebloggs.mydomain.com

I would like them to see:

mydomain.com/index.php?site=joebloggs

Also, if someone requested:

joebloggs.mydomain.com/contact

I would like them to see:

mydomain.com/index.php?site=joebloggs&page=contact

By "see" I mean see the page, rather than see the URL - it's a CMS-like project so you can probably see where I'm going with it. Also, I've worked out how to remove www. so that's not an issue :)

---

EDIT

Current .htaccess is:

RewriteEngine On

# Remove trailing slash
RewriteRule ^(.+)/$ $1 [L]

# Remove www
RewriteCond %{HTTP_HOST} ^www.richardmjenkins.com$ [NC]
RewriteRule ^(.*)$ http://richardmjenkins.com/$1 [R=301,L]

# Rewrite for site/page pair
RewriteCond %{HTTP_HOST} ^(.*)\.richardmjenkins\.com$ [NC]
RewriteCond %{REQUEST_URI} !p.php
RewriteRule ^(.+/)?([^/]*)$ p.php?s=%1&p=$2 [QSA,L,NC]

RewriteCond %{HTTP_HOST} ^(.*)\.richardmjenkins\.com$ [NC]
RewriteCond %{REQUEST_URI} !p.php
RewriteRule ^$ p.php?s=%1 [QSA,L,NC]

Answer 1

1. In your host panel : add a subdomain with name : * for enable all subdomains

2. this is your htaccess code :

RewriteEngine On
Options +Followsymlinks

RewriteCond %{HTTP_HOST} ^(.*)\.mydomain\.com$ [NC]
RewriteRule ^$ index.php?site=%1 [QSA,L,NC]

RewriteCond %{HTTP_HOST} ^(.*)\.mydomain\.com$ [NC]
RewriteRule ^([^/]+)/?$ index.php?site=%1&page=$1 [QSA,L,NC]

Answer 2

Enable mod_rewrite and .htaccess through httpd.conf and then put this code in your .htaccess under DOCUMENT_ROOT directory:

Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^((?!www)[^.]+)\.(mydomain\.com)$ [NC]
RewriteRule ^$ index.php?site=%1 [L,QSA]

RewriteCond %{HTTP_HOST} ^((?!www)[^.]+)\.(mydomain\.com)$ [NC]
RewriteRule ^(.+)$ index.php?site=%1&page=%2 [L,QSA]