JCal Pro 2 - сотрировка прошедших событий в модуле mod_jcalpro_latest - Общие вопросы по расширениям Joomla

if (!function_exists( 'jclModuleSortLatestItems')) {

  /**
   * Callback function to sort an array of events
   *
   * @param $first the first event to be compared, as an object
   * @param $second second event to be sorted, as an object
   * @return int 0, if items are equals, -1 if $first > $second, 1 if $first < $second
   */
  function jclModuleSortLatestItems( $first, $second) {

    global $userParams;

    // get user setttings
    $sort = JString::trim($userParams->def('sort', 'date'));
    $dir = JString::trim( $userParams->def( 'direction', 'asc'));

    // find about comparison criteria
    switch ($sort) {
      case 'category':
        $sort1 = 'cat_name';
        $sort2 = 'start_date';
        $sort3 = 'title';
        break;
      default:
        $sort1 = 'start_date';
        $sort2 = 'title';
        $sort3 = '';
        break;
    }

    // perform comparison
    // first level comparison
    if (!empty( $sort1)) {
      if ($first->$sort1 > $second->$sort1) {
        return $dir == 'asc' ? 1 : -1;
      } else if ($first->$sort1 < $second->$sort1) {
        return $dir == 'asc' ? -1 : 1;
      }
    }

    // first criterion is the same, look at second
    if (!empty($sort2)) {
      if ($first->$sort2 > $second->$sort2) {
        return $dir == 'asc' ? 1 : -1;
      } else if ($first->$sort2 < $second->$sort2) {
        return $dir == 'asc' ? -1 : 1;
      }
    }

    // second criterion is the same, look at third
    if (!empty($sort3)) {
      if ($first->$sort3 > $second->$sort3) {
        return $dir == 'asc' ? 1 : -1;
      } else if ($first->$sort3 < $second->$sort3) {
        return $dir == 'asc' ? -1 : 1;
      }
    }
    // all criteria are the same, items are equals
    return 0;
  }
}