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<?php $di = new DateInterval('-P1Y'); //$di->invert = 1; // Proper negative date interval var_dump($di);
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught DateMalformedIntervalStringException: Unknown or bad format (-P1Y) in /in/lHKoV:2 Stack trace: #0 /in/lHKoV(2): DateInterval->__construct('-P1Y') #1 {main} thrown in /in/lHKoV on line 2
Process exited with code 255.
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Exception: Unknown or bad format (-P1Y) in /in/lHKoV:2 Stack trace: #0 /in/lHKoV(2): DateInterval->__construct('-P1Y') #1 {main} thrown in /in/lHKoV on line 2
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Uncaught Exception: DateInterval::__construct(): Unknown or bad format (-P1Y) in /in/lHKoV:2 Stack trace: #0 /in/lHKoV(2): DateInterval->__construct('-P1Y') #1 {main} thrown in /in/lHKoV on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Uncaught exception 'Exception' with message 'DateInterval::__construct(): Unknown or bad format (-P1Y)' in /in/lHKoV:2 Stack trace: #0 /in/lHKoV(2): DateInterval->__construct('-P1Y') #1 {main} thrown in /in/lHKoV on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'DateInterval' not found in /in/lHKoV 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: dateinterval in /in/lHKoV on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: dateinterval in /in/lHKoV on line 2

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