Assistance needed to modify existing .htaccess

[dirtymonkey]

Hi all,

The following example routes all mydomain.com traffic to www.mydomain.com

########## Begin - Rewrite rules to enhance SEO SEF
#
RewriteCond %{HTTP_HOST} ^mydomain\.com [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.mydomain\.com\. [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.mydomain\.com:[0-9] [NC]
RewriteCond %{SERVER_PORT}>s ^(443>(s)¦80>s)$
RewriteRule (.*) http%2://www.mydomain.com/$1 [R=301,L] 
#
########## End - Rewrite rules to enhance SEO SEF

How do I do the reverse and route all www.mydomain.com traffic to mydomain.com?

Also how would I modify either to incorporate a sub domain?

Thanks in advance, DM.

[g1smd]

Add

www\.

to conditions where it is missing.
Remove

www\.

from those that already have it.
Remove

www.

from the target URL.

You'll need to explain what you mean by "incorporate a subdomain". You already have one: www.

[dirtymonkey]

Thanks g1smd, so to add (another) sub domain:

########## Begin - Rewrite rules to enhance SEO SEF
#
RewriteCond %{HTTP_HOST} ^subdomain\.mydomain\.com [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.subdomain\.mydomain\.com\. [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.subdomain\.mydomain\.com:[0-9] [NC]
RewriteCond %{SERVER_PORT}>s ^(443>(s)¦80>s)$
RewriteRule (.*) http%2://www.subdomain.mydomain.com/$1 [R=301,L]
#
########## End - Rewrite rules to enhance SEO SEF

[jdMorgan]

This 'reverses' the logic in your original rule, so that "www" is redirected to non-www:

########## Begin - Rewrite rules to enhance SEO SEF
#
RewriteCond %{HTTP_HOST} ^www\.example\.com [NC,OR]
RewriteCond %{HTTP_HOST} ^example\.com\. [NC,OR]
RewriteCond %{HTTP_HOST} ^example\.com:[0-9] [NC]
RewriteCond %{SERVER_PORT}>s ^(443>(s)¦80>s)$
RewriteRule ^(.*)$ http%2://example.com/$1 [R=301,L]
#
########## End - Rewrite rules to enhance SEO SEF

However, as g1smd says above, it would be helpful if you would tell us what you want to do when your "added" non-www subdomain is requested. Do you want to redirect it to add www? Do you want to redirect it to the canonical "example.com"? What is your goal or requirement here?

Jim

[dirtymonkey]

Thanks Jim, so to add a sub-domain to your example would be as follows?

########## Begin - Rewrite rules to enhance SEO SEF
#
RewriteCond %{HTTP_HOST} ^www\.subdomain\.example\.com [NC,OR]
RewriteCond %{HTTP_HOST} ^subdomain\.example\.com\. [NC,OR]
RewriteCond %{HTTP_HOST} ^subdomain\.example\.com:[0-9] [NC]
RewriteCond %{SERVER_PORT}>s ^(443>(s)¦80>s)$
RewriteRule ^(.*)$ http%2://subdomain.example.com/$1 [R=301,L]
#
########## End - Rewrite rules to enhance SEO SEF

For SEO purposes I know its generally better to use one or the other but would you recommend to redirect to www.example.com or the canonical "example.com"

[jdMorgan]

Again, when your "added subdomain" is requested, what do you want to happen?

We cannot answer unless you ask the question very clearly.

Jim

[g1smd]

I always use the www version of each URL. I like the fact that

site:www.example.com

lists all the pages of the site, and

site:example.com -inurl:www

should show nothing, or will show any Duplicate URLs or other 'escaped' sub-domains.

[dirtymonkey]

That's great guys thanks for your invaluable assistance, DM.