EC-CUBE / ec-cube

     *

     * @return integer

     */

    public function getCodeMin()

    {

        $this->_calc();

        $codes = [];

        foreach ($this->codes as $code) {

            if (!is_null($code)) {

                $codes[] = $code;

            }

        }

        return count($codes) ? min($codes) : null;

    }

    /**

     * Get Product_code max

     *

     * @return integer

     */

    public function getCodeMax()

    {

        $this->_calc();

        $codes = [];

        foreach ($this->codes as $code) {

            if (!is_null($code)) {

                $codes[] = $code;

            }

        }

        return count($codes) ? max($codes) : null;

    }

    public function getMainListImage()

    {