Online PHP editor | refs for tv3f0

<?php $week = 4; $week = sprintf("%04d", $week); echo $week; echo "\r\n"; $datetimeWeekStart = new DateTime('2013-W04-0'); echo $datetimeWeekStart->format('jS, F Y'); echo "\r\n"; echo $datetimeWeekStart->getTimestamp(); echo "\r\n"; $datetimeWeekEnd = new DateTime('2013-W04-7'); echo "\r\n"; echo $datetimeWeekEnd->format('jS, F Y'); echo "\r\n"; echo $datetimeWeekEnd->getTimestamp();