How to make subdomain by php

[hno]

HI,

I want to make a web site that every one can sign up and after that they would have a subdomain of my site name just like web log system .You know blogfa bogging system and when every one makes a new account they have a subdomain of that site.

I want to make something like that ,and after every ones registered they would have a subdomain of my site with a script installed it it.

How can make something like that?

I apologize for my bad english.

 

Thanks

[robert_gsfame]

use mod_rewrite, anyway this is Apache issue

[hno]

use mod_rewrite, anyway this is Apache issue

 

can you explain it more ? I didn't understand

[jonsjava]

mod_rewrite doesn't work for creating sub domains, to my knowledge.  sub domains require A or CNAME records, or they don't work. 

He was almost right. You need a wildcard A record (*.yourdomain.com), then you need to add it to your vhost, then here's an example .htaccess file to get it done:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^[^.]+\.example\.com$
RewriteRule !^index\.php$ index.php [L]