Online PHP editor | refs for USCDv

<?php class Drupal { } if (class_exists('FakeDrupal') && defined('FakeDrupal::CORE_COMPATIBILITY')) { echo FakeDrupal::CORE_COMPATIBILITY; } if (class_exists('Drupal') && defined('Drupal::CORE_COMPATIBILITY')) { echo Drupal::CORE_COMPATIBILITY; } if (class_exists('Drupal1') && defined('Drupal1::CORE_COMPATIBILITY')) { echo Drupal1::CORE_COMPATIBILITY; }