many thanks.. i need change my requirements.
Now i change this htacces to.. its true ? and "secure" ? ###################################
RewriteEngine On
RewriteBase /
php_flag register_globals on
Options +FollowSymLinks +Indexes
RewriteCond $1 !^sub
RewriteCond %{HTTP_HOST} !^www\.my-domain\.info$ [NC]
RewriteCond %{HTTP_HOST} ^(www\.)?([[:alnum:]-]+)\.my-domain\.info$ [NC]
RewriteRule ^(.*$) sub/file.php?sub=%2 [L]
###################################
it makes ..
www.my-domain.info => www.my-domain.info/index.php
(www.)subdomain.my-domain.info => www.my-domain.info/sub/file.php?sub=subdomain
(www.)subdomain.my-domain.info/somethink/else/ => www.my-domain.info/sub/file.php?sub=subdomain
and by php > REQUEST_URI .. i will get "/somethink/else/", where i explode "/" and i get category, page etc. by position in url.
I want to using by 1 file - file.php, where i need know so i have this subdomains, and im in this location.
its possible or somewhere have better idea ?