"Rainydays Sunshine" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> 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..
How many unique values do you need, and how hard-to-fake?
I
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...).
[EMAIL PROTECTED] 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" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> if u are looking for a simple random string try this php:
>
> echo md5(
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() i
