markuspoerschke / iCal

     *

     * @return $this

     */

    public function setByWeekNo($value)

    {

        if (!is_integer($value) || $value > 53 || $value < -53 || $value === 0) {

            throw new InvalidArgumentException('Invalid value for BYWEEKNO');

        }

        $this->byWeekNo = $value;

        $this->canUseBySetPos = true;

        return $this;

    }

    /**

     * The BYYEARDAY rule part specifies a COMMA-separated list of days of the year.

     *

     * @return $this

     */

    public function setByYearDay($day)

    {

        if (!is_integer($day) || $day > 366 || $day < -366 || $day === 0) {

            throw new InvalidArgumentException('Invalid value for BYYEARDAY');

        }

        $this->byYearDay = $day;

        $this->canUseBySetPos = true;

        return $this;

    }

    /**

     * The BYMONTHDAY rule part specifies a COMMA-separated list of days of the month.

     *

     * @throws \InvalidArgumentException

     */

    public function setByMonthDay($day)

    {

        if (!is_integer($day) || $day > 31 || $day < -31 || $day === 0) {

            throw new InvalidArgumentException('Invalid value for BYMONTHDAY');

        }

        $this->byMonthDay = $day;

        $this->canUseBySetPos = true;

        return $this;

    }

    /**

     * The BYDAY rule part specifies a COMMA-separated list of days of the week;.