Create unique order no. with no database

[dotty]

Hi

I'm stuck on something which is probably simple but I can't work it out.

I am making a non-database ordering system where the client only wants email notification. The gateway require a unique order number - how do I generate a unique number if there is no reference point? Random is not enough.

Any advice anyone??

[Weedpacket]

How about a millisecond-resolution timestamp? Unless the site is really busy (with two new numbers being generated within a millisecond of each other) that should be unique enough.

1100164767797
1100164768562
1100164769265
...

[dotty]

That's a good idea - and i might just tag their name onto it or some element of their information to make it really really unique!

thanks a lot Weedpacket 🙂