private function formatS(&$str) {
    if (strstr($str, '%S'))
      $str = str_replace('%S', static::ordinal($this->day), $str);
  }
private function formatS(&$str) {
    if (strstr($str, '%S'))
      $str = str_replace('%S', static::ordinal($this->day), $str);
  }
private function formatS ( & $ str ) { if ( strstr ( $ str , '%S' ) ) $ str = str_replace ( '%S' , static :: ordinal ( $ this -> day ) , $ str ) ; }
English ordinal suffix for the day of the month, 2 characters
@param type $str
English ordinal suffix for the day of the month 2 characters