3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $date = new DateTime(); $week = $date->format("W"); echo "Weeknummer: $week";
based on 6pRgJ
Output for 5.2.0 - 5.4.32, 5.6.28, 7.0.14 - 7.1.0
Weeknummer: 39
Output for 7.0.6
Weeknummer: 18
Output for 5.5.30, 5.6.14 - 5.6.15, hhvm-3.10.0, 7.0.5
Weeknummer: 13
Output for 5.5.33, 5.6.19, hhvm-3.12.0, 7.0.4
Weeknummer: 10
Output for 5.4.34 - 5.4.38, 5.5.31 - 5.5.32, 5.6.17 - 5.6.18, 7.0.3
Weeknummer: 11
Output for 5.6.16, 7.0.0 - 7.0.2
Weeknummer: 12
Output for 5.5.25 - 5.5.26, 5.6.8 - 5.6.9, 5.6.21
Weeknummer: 17
Output for 5.5.34, 5.6.20
Weeknummer: 14
Output for 5.5.29, 5.6.13
Weeknummer: 15
Output for 5.5.27 - 5.5.28, 5.6.10 - 5.6.12
Weeknummer: 16
Output for 5.5.24, 5.6.7
Weeknummer: 21
Output for 5.5.35
Weeknummer: 20
Output for 5.4.44 - 5.4.45
Weeknummer: 38
Output for 5.4.39 - 5.4.43
Weeknummer: 31
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/CFURZ on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/CFURZ on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/CFURZ on line 5