Generic htaccess redirect www to non-www

Question

I would like to redirect www.example.com to example.com.

The following htaccess code makes this happen:

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

But, is there a way to do this in a generic fashion without specifying the domain name?

Answer 1

Try this:

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

If the host starts with www, we stick the whole host onto the start of the URL, then take off the "www."

Answer 2

RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^/(.*)$ http://%1/$1 [R]

The RewriteCond captures everything in the HTTP_HOST variable after the "www." and saves it in %1. The RewriteRule captures the URL (sans leading "/") and saves it in $1.

Answer 3

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

Same as Michael's except this one works :P

Answer 4

Please see here:

http://no-www.org/

They've got code samples for apache.

Answer 5

But if we need to do this for separate http and https:

  RewriteCond %{HTTPS} off
  RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
  RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

  RewriteCond %{HTTPS} on
  RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
  RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

Answer 6

What about subdomain like http://article.ourtoday.info

I try many times but it's not work !