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<?php $iso = $start->format(DateTime::W3C) . '/' . $end->format(DateTime::W3C) . '/P1D'; #$iso = 'R2/2013-09-09T12:00:15Z/P1D'; var_dump($iso); $periods = new DatePeriod($iso);

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53.3 ms | 406 KiB | 6 Q