3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $yr="2011"; $week="01"; $day="Monday"; $day=date("D",strtotime($day)); $newdate= date("d-m-Y", strtotime($yr."W".$week."D ".$day));; echo $newdate; $k = explode("-", $newdate); $ymd = $k[2]."-".$k[1]."-".$k[1]; echo $ymd ?>
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
04-01-20112011-01-01
Output for 5.1.0 - 5.1.6
02-01-20112011-01-01
Output for 5.0.0 - 5.0.5
19-12-20102010-12-12
Output for 4.3.0 - 4.4.9
01-01-19701970-01-01