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<?php var_dump((new \DateTime('today - 3 month'))->modify('first day of month'));
Output for 8.3.0 - 8.3.7
Fatal error: Uncaught DateMalformedStringException: DateTime::modify(): Failed to parse time string (first day of month) at position 13 (m): The timezone could not be found in the database in /in/gp0vc:3 Stack trace: #0 /in/gp0vc(3): DateTime->modify('first day of mo...') #1 {main} thrown in /in/gp0vc on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19
Warning: DateTime::modify(): Failed to parse time string (first day of month) at position 13 (m): The timezone could not be found in the database in /in/gp0vc on line 3 bool(false)
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/gp0vc on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/gp0vc on line 3 Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/gp0vc on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/gp0vc on line 3 Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/gp0vc on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/gp0vc on line 3 Parse error: parse error in /in/gp0vc on line 3
Process exited with code 255.

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