root/branches/trivoallan/config/config.php

<?php
// symfony directories
$sf_symfony_lib_dir  = dirname(__FILE__).'/../lib/symfony';
$sf_symfony_data_dir = dirname(__FILE__).'/../data/symfony';

// symfonians constants definition
if (!defined('SYMFONIANS_MAIN_DOMAIN'))
{
  $main_host = 'symfonians.tld';
  if (array_key_exists('HTTP_HOST', $_SERVER))
  {
    $host_parts = explode('.', $_SERVER['HTTP_HOST']);
    $main_host = implode('.', array($host_parts[count($host_parts) -2],
                                    $host_parts[count($host_parts) -1]));
  }
  define('SYMFONIANS_MAIN_DOMAIN', $main_host);
}