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@ 2013-07-08T22:06:57Z

<?php
function MakeCouponCode() {
  $res = "BADPERK-";
  for($i = 0; $i < 5; ++$i)
    $res .= chr(mt_rand(0, 1) == 0 ? mt_rand(65, 90) : mt_rand(48, 57));
  return $res;
}

$coupons = array();
for($i = 0; $i < 5; ++$i)
  $coupons[] = MakeCouponCode();

echo $coupons;

Output
Performance
VLD
References
Branches

chr: documentation ( source)
mt_rand: documentation ( source)

preferences:dark modelive preview

31.55 ms | 402 KiB | 5 Q