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run code in 150+ php & hhvm versions
Bugs & Features
<?php $dt = new DateTime('first day of Jan 2014'); print $dt->format('c');
Output for 5.3.0 - 5.3.2, 5.3.4 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
2014-01-01T00:00:00+01:00
Output for 5.3.3

Process exited with code 143.
Output for 5.2.0 - 5.2.17
Fatal error: Uncaught exception 'Exception' with message 'DateTime::__construct(): Failed to parse time string (first day of Jan 2014) at position 10 (o): The timezone could not be found in the database' in /in/iicaj:3 Stack trace: #0 /in/iicaj(3): DateTime->__construct('first day of Ja...') #1 {main} thrown in /in/iicaj on line 3
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/iicaj 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/iicaj 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/iicaj on line 3