How to implement a real-time subdomain in PHP?

Question

Suppose domain is domain.name,

after registering a new user, you need to create a new domain: user1.domain.name.

How to implement it?

BTW, is there a limit to the number of subdomains?

Answer 1

I would just use a wildcard to indicate all subdomains in a specific directory and have a front controller there that determines which one to use from the URL - this is the simplest and safest solution from PHP.

EDIT . Then you can obviously check if it should be existing (store them in a database, etc.), etc.

Answer 2

, , DNS-:

• http://en.wikipedia.org/wiki/Wildcard_DNS_record

DNS/Apache:

• http://ma.tt/2003/10/wildcard-dns-and-sub-domains/

( ):

• http://sebastiano.ezion.cc/2008/03/08/wildcard-dns-and-php/

Answer 3

Subdomains can be restored using .htaccess (you need, however, the wildcard mentioned earlier in this thread):

RewriteEngine On
RewriteCond %{HTTP_HOST} ^user([0-9]{1,10}).domain.name$
RewriteRule ^.*$ index.php?subdomain=%1