Mod เขียน URL ฐานใหม่

RewriteCond %{HTTP_HOST} ([^.]+)\.com$ [NC]
RewriteRule ^/?$ http://www.sample.com/default.php?from=%1 [L,P]
RewriteCond %{HTTP_HOST} !^www\.sample\.com$ [NC]
RewriteCond %{HTTP_HOST} ([^.]+)\.com$ [NC]
RewriteRule ^/?$ /default.php?from=%1 [L]