Go to the manual at http://be2.php.net/manual/en/function.rand.php and look at the User contributed notes further down the page. You'll find a couple of solutions.

Whatever you do, you will presumably need to check the generated number against the db to see if it is already in use and, if not, generate a new random number.

Good luck,


Desmond Coughlan wrote:
X-No-Archive: true

I'm learning PhP and trying to write a library catalogue system, that uses a PostgreSQL back-end. My db looks like this ...

I had originally planned to have a username in place of 'card_number', but 
realised that there was no point.  What I need now is the PhP code that will 
create a card number, and rather than having a sequence, I want a random 
three-digit number.  Can someone point me in the direction of where and how PhP 
can do this?



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