PHP get last Monday, get the last week date of the specified date, last Monday

 PHP Get last Monday , Get the last week date of the specified date , last Monday

        $end_date = '2022-02-26';
        $w = date("w", strtotime($end_date)); //  week 
        if( $w == 0 ) $w = 7; // 0= Sunday 
        $n = $w - 1 + 7; //  last Monday 
        $date = date('Y-m-d', strtotime("-{$top_day_n} days", strtotime($end_date)));

        echo "{$end_date} Last Monday :{$date}";