3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getStartAndEndDate($week, $year) { $dto = new DateTime(); $ret['week_start'] = $dto->setISODate($year, $week)->format('Y-m-d'); $ret['week_end'] = $dto->modify('+6 days')->format('Y-m-d'); return $ret; } print_r(getStartAndEndDate(24, 2014));

preferences:
36.09 ms | 402 KiB | 5 Q