Please fill in ALL fields."; } else if (!is_numeric($zip)) { echo "

Zip code must be numeric.

"; } else { echo "

Thank you, " . htmlspecialchars($name) . "!

"; echo "

Address: " . htmlspecialchars($address) . "
"; echo "State: " . htmlspecialchars($state) . "
"; echo "Zip: " . htmlspecialchars($zip) . "

"; } ?>