[SOLVED] Create random alphanumeric code...

[iPixel]

Hey dudez and dudettes, im working on this little fun project where instead of people mailing back RSVP's from my invitations they will also have the option to RSVP via a website.

 

So each invitation will have a code A1B2C3 which the user will input and the site will automatically know who that person is and the amount of people on that invitation.

 

I really dont feel like randomly crating the 5 character codes myself and figured it would be more usefull for me to learn how to do it the php way hehe...

 

So basically i want to run a script that will create lets say 100  five character alphanumeric codes all caps plz. That look like F9M3C1.

 

Thank You all who help.

[anthrt]

echo strtoupper(substr(md5(rand().rand()), 0, 5));

[iPixel]

LoL i though it would be at least a little harder than that.

 

Thank You Very much... this is perfec.

[kenrbnsn]

That solution will only give you letters in the range of 'A' to 'F', the following solution uses the whole alphabet:

<?php
$a = array_merge(range(0,9),range('A','Z'));
shuffle($a);
echo implode('',array_slice($a,0,5));
?>

 

Ken

[Barand]

 

So basically i want to run a script that will create lets say 100  five character alphanumeric codes all caps please. That look like F9M3C1.

 

 

Erm, F9M3C1 is 6 characters