3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $check = new DateTime(); $check->setISODate(2014, 1, 1); echo $check->format('W');
based on EZYb8
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
01
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/5S8eY on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/5S8eY on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/5S8eY on line 3