Activation of Account VIA E-mail

[Anon]

Does anybody know how to do the affect this site uses to activate an account. I want to send an e-mail to the users who register and include a custom URL to activate their account. If not does anybody know where I can go?

[Anon]

I generate a 10 digit random number, store it in the database, and also build it into a URL which I then send to the user (i.e. http://domain.com/verify.php?email=[e-mail]&verification=01234556789).

The user then follows this hyperlink, a script verifies the verification number matches that which I have on record for their address, and changes a flag from inactive to active on their record in my database. Simple.

HTH, Andy.