Question

I found this Stack Overflow post explaining how you can generate random coupon codes.

I’m looking into using that code and generate multiple coupons at once (e.g. 50), while separate them by a comma.

The output would be: COUPON-HMECN, COUPON-UYSNC, etc.

Code below and codepad example available.

      $chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
      $res = "COUPON-";

      for ($i = 0; $i < 5; $i++) {
          $res .= $chars[mt_rand(0, strlen($chars)-1)];     
      }

      echo $res . ",";     

Answer 1

$chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$numCodesToGenerate = 5;

for ($n = 0; $n < $numCodesToGenerate; $n++)
{
    $res = "COUPON-";

    for ($i = 0; $i < 5; $i++) {
      $res .= $chars[mt_rand(0, strlen($chars)-1)];     
    }

    echo $res . ","; 
}