Custom code - MarketPress special pricing

    if ($meta["mp_is_sale"]) {
      //do some crazy stuff here to get the lowest price pair ordered by sale prices
      asort($meta["mp_sale_price"], SORT_NUMERIC);
      $lowest = array_slice($meta["mp_sale_price"], 0, 1, true);
      $keys = array_keys($lowest);
      $mp_price = $meta["mp_price"][$keys[0]];
      $mp_sale_price = array_pop($lowest);
            $price .= '<span itemprop="price" class="mp_current_price">'.$mp->format_currency('', $mp_price).'</span></span>';
          } else {
      sort($meta["mp_price"], SORT_NUMERIC);
            $price = __('from', 'mp').' <span itemprop="price" class="mp_normal_price"><span class="mp_current_price">'.$mp->format_currency('', $meta["mp_price"][0]).'</span></span>';
          }
        } else {
                return '';
        }