Tricky function...Can it be done?

[Anon]

Hello,

I am codeing an app that will take user submitted forms and insert them to db and also e-mail the compleated form. That was the easy part. Now I would like to also write a function that will generate a unique ID for the submittion.

What I want it to do is take the first 3 letters of the user's name, user's zipcode, and a randomly generated 3 digit number.

i.e.
Name:Chris Hughes, ZIP 90247
ID CHR90247-874

Any help with the first 3 letter thing would be great!.

Thanks for reading.
Chris

[Anon]

srand ((double) microtime() * 1000000);
$randval = rand(100,999);
$id=substr($username,0,3).$zipcode."-".$randval;
echo $id."\n";

[Anon]

This should do the trick:

mt_srand ((double) microtime() *
1000000); // seed the rand num generator

$id = strtoupper(substr($first_name,0,2)) . $zip . "-" . mt_rand(100, 999);