getDateRange

gistfile1.php

    public function getDateRange()
    {
        $Start  = new \DateTime(date('Y-m-d')); // Datum von
        $dtEnd = new \DateTime(date('m/y'));    // Datum bis
        $dtEnd->modify('first day of next month');
        
        $dtStart = $Start->modify('-1 year');
        
        $period = new \DatePeriod(
            $dtStart,
            new \DateInterval('P1M'), // Periode: 1 Monat
            $dtEnd
        );
        
        $period = array_reverse(iterator_to_array($period));

        return $period;
    }

Method to dynamically create a one-year DateRange based on the current month. I use this on my website as a dropdown menu filter to show only the monthly dates selected by the user.

creates:
2021/09
2021/08
2021/07
2021/06
2021/05
2021/04
2021/03
2021/02
2021/01
2020/12
2020/11
2020/10
2020/09

based on the actuall month