3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $dt = new DateTime(); $dt->modify('first day of month'); echo $dt->format('Y-m-d');
Output for 5.3.2 - 5.6.22, hhvm-3.12.0, 7.0.0 - 7.1.0
Warning: DateTime::modify(): Failed to parse time string (first day of month) at position 13 (m): The timezone could not be found in the database in /in/66Z9D on line 3 2013-01-28
Output for 5.3.0 - 5.3.1, hhvm-3.10.0
2013-01-01
Output for 5.2.13 - 5.2.17
Warning: DateTime::modify(): Failed to parse time string (first day of month) at position 10 (o): The timezone could not be found in the database in /in/66Z9D on line 3 2013-01-28
Output for 5.2.0 - 5.2.12
2013-01-29
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/66Z9D on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/66Z9D on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/66Z9D on line 2