0) { $even = ($numberOf % 2 == 0); $odd = ($numberOf % 2 != 0); if ($numberOf == 1) { echo $numberOf . " bottle of beer can serve ONLY ONE guest
"; } elseif ($odd) { echo $numberOf . " bottles of beer can serve odd number of guests
"; } elseif ($even) { echo $numberOf . " bottles of beer can serve even number of guests
"; } $numberOf--; } ?>