Rewriting Subdomains to Subdirectory without redirection - .htaccess

Question

I want to create virtual subdomains
like:
user1.domain.com/anythging >> domain.com/users/user1/anything
Without redirection
I use this cdoe in htaccess:
RewriteEngine on
DirectorySlash off
RewriteBase /
RewriteCond %{HTTP_HOST} ^(.*)\.domain\.com.*$ [NC]
RewriteRule ^(.*)$ http://domain.com/users/%1/$1 [P,L,NC,QSA]
But when I use :
DirectorySlash off
I can rewrite:
user1.domain.com/anythging/ >> domain.com/users/user1/anything
with slash (/) at the end ( anythging/ ),
But this
user1.domain.com/anythging >> error 403: Forbidden
You don't have permission to access /users/user1/anythging on this server.
in the second case, when I use:
DirectorySlash ON
this:
user1.domain.com/anythging >> redirects to >> domain.com/users/user1/anythging
But I whant to rewrite the link not redirect it!
Any idea where is the problem?

Answer 1

Not sure why DirectorySlash isn't working for you but you don't exactly need it to achieve what you want. This .htaccess would also work. I'm assuming you want any trailing slash if present to be dropped.
RewriteEngine on
RewriteBase /
RewriteCond %{HTTP_HOST} ^(.*)\.domain\.com$ [NC]
RewriteRule ^(.*?)/?$ http://domain.com/users/%1/$1 [L]
Also, there's no need for proxy [P], query string append [QSA] (it's on by default) and no-case [NC] (since, the rewrite regex only contains wildcards).

Answer 2

I found the solution:
RewriteEngine on
DirectorySlash off
RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.([^\.]*)\.domain\.com$ [NC]
RewriteRule (.*) http://%1.domain.com/$1 [R=301,L]
RewriteCond %{HTTP_HOST} ^www.domain.com$ [NC]
RewriteRule ^(.*)$ http://domain.com/$1 [L,R=301]
RewriteCond %{HTTP_HOST} ^(.*)\.domain\.com$ [NC]
RewriteRule ^(.*?)/?$ http://domain.com/users/%1/$1/ [P]
it might need some cleaning to redirect all www links to non-www and to exclude the www.domain.com from subdomain rewriting