Cacher is the code snippet organizer for pro developers

    /**
     * 月内の第何回目の曜日かを取得
     *
     * @param integer $day 日
     * @return integer 回数
     */
    private function _makeWeekNum($day) {
        $weekNum = 0;
        for ($num = 1 ; $num < 6 ; $num++) {
            $day -= 7;
            if ($day < 1) {
                $weekNum = $num;
                break;
            }
        }
        return $weekNum;
    }