if u are looking for a simple random string try this php: echo md5(time());
or md5() a random number your choice. md5() genetates a one way non-reversable hash. which could be kept in a db. here is an example of the md5 hash of my library card number: 11d560821fb027c227d837df53a5a73a md5() is often used to store passwords and make them non-viewable. if you are just looking for a unique number an auto-increment coloumn in mysql or what ever should do it. -- JJ Harrison [EMAIL PROTECTED] www.tececo.com "Rainydays Sunshine" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Any ideas how to generate a unique serial number that you can check that > it's valid.. > > Thanks... > > -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
