Online PHP editor | refs for f9WXH

@ 2014-01-23T09:24:51Z

<?php

define('HELLO_WORLD', Constants::HELLO . Constants::WORLD);

class Constants {
  const HELLO = 'Hello ';
  const WORLD = 'world.';
  const HELLO_WORLD = HELLO_WORLD;
}

echo Constants::HELLO_WORLD;