MLP callback examples

<?php

global $prefs;
$prefs['l10n_language_marker_func'] = 'gbp_language_marker';
function gbp_language_marker($long) {
  switch ($long) {
    case 'en-gb': return 'uk/en';
    break;
    case 'en-us': return 'usa/en';
    break;
    default:
      return nil;
    break;
  }
}

$prefs['l10n_detect_language_func'] = 'gbp_detect_language';
function gbp_detect_language($url) {
  switch (true) {
    case strpos($url, '/uk/en/') !== false:
      $code  = 'uk/en';
      $short = 'en';
      $long  = 'en-gb';
    break;
    case strpos($url, '/usa/en/') !== false:
      $code  = 'usa/en';
      $short = 'en';
      $long  = 'en-us';
    break;
    default:
      return nil;
    break;
  }

  return array(
    'uri' => array(
      'reduced' => str_replace("/$code/", '/', $url),
      'code'    => $code),
    'lang' => array(
      'short' => $short,
      'long'  => $long)
    );
}