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<?php $dt = new DateTime('2013-10-31 00:00:01'); $dt->diff(new DateInterval('P1M')); echo $dt->format('Y/n/j');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: DateTime::diff(): Argument #1 ($targetObject) must be of type DateTimeInterface, DateInterval given in /in/j7NbX:3 Stack trace: #0 /in/j7NbX(3): DateTime->diff(Object(DateInterval)) #1 {main} thrown in /in/j7NbX on line 3
Process exited with code 255.
Output for 5.5.8 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, object given in /in/j7NbX on line 3 2013/10/31
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.7
Warning: DateTime::diff() expects parameter 1 to be DateTime, object given in /in/j7NbX on line 3 2013/10/31
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::diff() in /in/j7NbX on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/j7NbX on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/j7NbX 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/j7NbX on line 2

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