Generate random PIN with formit submit

My client has a form (using formit) and alongside the emailed results (name, email, phone), they want a unique 8 digit alpha-numberic PIN generated and included in those emailed results.

The caveats are:

• The PIN must start with a predefined 4 letter acronym of "MODX"
• The PIN must end with 4 unique digits
• Code must be unique (not generated more than once)

I want to outsource this but am looking for a little background information before I approach someone. IE If its possible. Is it a post hook etc?
Many thanks for the help.

this can be done by a hook (something like formit2db), which stores all used PINs into a db-table.

Thinking programmatically, you should be able to write a short snippet that generates this number for you. Check out this example on Stack Overflow for some inspiration: http://stackoverflow.com/questions/3954599/generate-random-string-from-4-to-8-characters-in-php. You could set your unique prefix e.g. MODX and then append the unique value to it. I imagine you could send the value in a hidden form element if you want it to be hidden. This is a brain dump so hope it helps.

Cheers

Tom

Cheers guys. Appreciate the info and links.

I hope this is not for banking or anything else that requires real security, and if I'm understanding you, you can only have 999 users.

Quote from: BobRay at Apr 20, 2013, 06:38 AM

I hope this is not for banking or anything else that requires real security, and if I'm understanding you, you can only have 999 users.

LOL, no! Definitely not for banking. I only used the word "PIN" for convenience sake.
I know the max number of submissions will come to 9999 but that's plenty for the mo.