.htaccess Redirections

# If we're not on http://example.com
RewriteCond %{HTTP_HOST} .+.example.com

# Add the host to the front of the URL and chain with the next rule
RewriteRule ^(.*)$ ${HOST}$1 [C,QSA]

# Make the host a directory
RewriteRule ^(.*).example.com(.*)$ http://example.com/$1$2 [QSA]

RewriteCond %{HTTP_HOST} ^([^.]+).example.com$
RewriteRule ^ http://example.com/%1 [L,R]

RewriteCond %{HTTP_HOST} ^([^.]+).example.com$
RewriteRule ^ /%1%{REQUEST_URI} [L]