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run code in 200+ php & hhvm versions
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<?php $a = new DateTime('2015-1-31'); $b = new DateTime('2015-2-1'); echo $a->format('Y-m-d'); echo $a < $b ? 'ja' : 'nein';
based on QVJZW
Output for 5.2.2 - 7.2.0
2015-01-31ja
Output for 5.2.0 - 5.2.1
2015-01-31nein
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/oMhtZ 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/oMhtZ 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/oMhtZ on line 3