supportdesk.php

<?php

for ($i = 1; $i <= 100; $i++) {
  $isMultipleOfThree = ($i % 3 == 0);
  $isMultipleOfFive = ($i % 5 == 0);
  if ($isMultipleOfThree) {
    echo "Support";
  }
  if ($isMultipleOfFive) {
    echo "Desk";
  }
  if (!$isMultipleOfThree && !$isMultipleOfFive) {
    echo $i;
  }
  echo "
  ";
}