Redirect/rewrite dynamic URL to sub-domain and create DNS for subdomain

Question

I have created an application in PHP, I would like to re-direct the following URL to corresponding sub-domain.

Dynamic URL pattern:

http://mydomain.com/mypage.php?user_name=testuser

I wish to re-direct this to the corresponding sub domain:

http://testuser.mydomain.com/

How do I create a rewrite rule for this purpose?
How do I register DNS for sub-domain without using CPANEL? (I want to activate sub-domain when the user registers to the system.)

Are you sure you want to have subdomain testuser with host www in it, not host testuser in base domain? — Lazy Badger, Oct 27 '11 at 09:24
@Lazy Badgemydomain is the main domain and testuser is the sudomain. — Abdul Majeed, Oct 27 '11 at 09:30
for which task you want to give domain to user? It's possible, just can't see reasons — Lazy Badger, Oct 27 '11 at 09:47
I want to give personalized site for each user.They can edit their page. — Abdul Majeed, Oct 27 '11 at 10:43
"site" is host, not domain. Learn correct terms! www isn't mandatory in site-name - it's same hostname, as others - you just make sitename unnesessary long and complex — Lazy Badger, Oct 27 '11 at 12:24
If you mean you want the sub-domain activated automatically when the user registers, you might be going about this a bit wrong(or at least inefficiently). Instead, enable wildcard sub-domains. Then see this previous question. (If that does work for your situation, be sure to come back and request this be closed as a duplicate, or just trash it yourself.) — Su', Oct 28 '11 at 10:44
What you need is right here: http://stackoverflow.com/questions/183928/how-to-let-php-to-create-subdomain-automatically-for-each-user — rocketscientist, Nov 09 '11 at 23:16

score 3 · Answer 1 · answered Feb 05 '12 at 23:24

Take a look at this thread over at webmaster world

You'll need to create:-

A DNS mapping: *.yourdomain.com => your IP
A server alias *.yourdomain.com in your virtualhost configuration

.htaccess file with something like:

RewriteEngine on
RewriteCond &#37;{HTTP_HOST} ^user\.example\.com [NC]
RewriteRule ^(.*)$ /user [R=301,L]

You can replace user with ([a-z]) and use it in the rewriteRule. That way you can have a general mapping: something.yourdomain.com => yourdomain.com/user, even if the user isn't signed up to your site.

score 2 · Answer 2 · answered May 14 '12 at 00:01

You need to use a wildcard DNS rule for the subdomains, then you can do a rewrite rule to redirect that link to the correct domain.

Information on this can be found here: http://www.thecpaneladmin.com/setting-up-wildcard-dns-with-cpanel/

You will need access to the configuration files so it may not be easy depending on your host and hosting plan.

Redirect/rewrite dynamic URL to sub-domain and create DNS for subdomain

2 Answers2