3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo date('d/m/Y'); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W".date("W")."-1")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W".date("W")."-5")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W27-1")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W27-5")); print "\n"; echo date('N', strtotime(date('Y')."-W27-".date('t'))); ?>
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
13/06/2014 09/06/2014 13/06/2014 30/06/2014 04/07/2014 4
Output for 5.1.0 - 5.1.6
13/06/2014 01/01/1970 01/01/1970 01/01/1970 01/01/1970 4
Output for 5.0.0 - 5.0.5
13/06/2014 09/06/2014 13/06/2014 30/06/2014 04/07/2014 N
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
13/06/2014 01/01/1970 01/01/1970 01/01/1970 01/01/1970 N

preferences:
190.61 ms | 402 KiB | 369 Q