3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $dt = new DateTime('first Monday of next month'); echo $dt->format('W');
based on Sm44B
Output for 5.3.0 - 5.4.32, 5.6.28, 7.0.14 - 7.1.0
36
Output for 5.4.39 - 5.4.40, 5.5.24, 5.5.35, 5.6.21, 7.0.6
23
Output for 5.5.25 - 5.5.30, 5.5.34, 5.6.8 - 5.6.14, 5.6.20, 7.0.5
18
Output for 5.5.31 - 5.5.33, 5.6.15 - 5.6.19, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.4
14
Output for 5.4.45
41
Output for 5.4.42 - 5.4.44
37
Output for 5.4.41
28
Output for 5.4.36 - 5.4.38
10
Output for 5.4.34 - 5.4.35
49
Output for 5.2.0 - 5.2.17
Fatal error: Uncaught exception 'Exception' with message 'DateTime::__construct(): Failed to parse time string (first Monday of next month) at position 13 (o): The timezone could not be found in the database' in /in/uB378:3 Stack trace: #0 /in/uB378(3): DateTime->__construct('first Monday of...') #1 {main} thrown in /in/uB378 on line 3
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/uB378 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/uB378 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/uB378 on line 3