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<?php function getStartAndEndDate($week, $year) { $dto = new DateTime(); $result[0] = $dto->setISODate($year, $week, 0)->format('Y-m-d'); $result[1] = $dto->setISODate($year, $week, 6)->format('Y-m-d'); return $result; } print_r(getStartAndEndDate(date('W'), 2017));

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