How to setup sub-domains like blogspot

Question

What should do to setup a sub-domain for the users when they sign-up into my site.

What are the infrastructure required? I am using Linux servers.

Answer 1

infrastructure includes access the the dns server to add a wildcard entry, and rewrite rules in Apache.

Try these answers:

• How to let PHP to create subdomain automatically for each user?
• How to make subdomain user accounts in a webapp

or this link:

• http://jam.jrox.com/docs/index.php?article=76