Re: Re: please help.. serial number generator

use the MD5 function and just take the 1st 10 chars or better yet, once you have the MD5 value, use a wacky routine to take the first 10 odd position values... since each time you run the function, it will always return the same value (given the same string parameter...). rainydays_sunshine@hotmail.com wrote: > I need to create some kind of 10 digits serial number where I can generate > and check that it is valid. Sort of like a checksum.. > "Jj Harrison" <webmaster@tececo.com> wrote in message > news:20020730085118.73595.qmail@pb1.pair.com... > > 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 > > webmaster@tececo.com > > www.tececo.com > > > > "Rainydays Sunshine" <rainydays_sunshine@hotmail.com> wrote in message > > news:20020730070037.88410.qmail@pb1.pair.com... > > > 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 -- Leo G. Divinagracia III ldivinag@csuhayward.edu