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<?php var_dump(new DateTime('start of -1 month'));
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught DateMalformedStringException: Failed to parse time string (start of -1 month) at position 0 (s): The timezone could not be found in the database in /in/IL7YN:3 Stack trace: #0 /in/IL7YN(3): DateTime->__construct('start of -1 mon...') #1 {main} thrown in /in/IL7YN on line 3
Process exited with code 255.
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Exception: Failed to parse time string (start of -1 month) at position 0 (s): The timezone could not be found in the database in /in/IL7YN:3 Stack trace: #0 /in/IL7YN(3): DateTime->__construct('start of -1 mon...') #1 {main} thrown in /in/IL7YN on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string (start of -1 month) at position 0 (s): The timezone could not be found in the database in /in/IL7YN:3 Stack trace: #0 /in/IL7YN(3): DateTime->__construct('start of -1 mon...') #1 {main} thrown in /in/IL7YN on line 3
Process exited with code 255.

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