先週の1週間を取得

先週

    $last_sunday = date("Y-m-d",strtotime("last Sunday"));
    $last_week_cast_ranking_list = RankingCastDaily::getRankingListByCondition([
        'area_id' => $area,
        'not_price_0' => 'true',
        'start_date' =>  date("Y-m-d",strtotime("-6 day" .$last_sunday)),
        'end_date' => date("Y-m-d",strtotime("last Sunday")),
    ]);