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<?php $date = new \DateTime('first day of last month'); $date2 = new \DateTime('last month'); $date2->modify('first day of month'); echo $date->format('Y-m-d') . "\n"; echo $date2->format('Y-m-d') . "\n";
Output for git.master, git.master_jit
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/3ngKF on line 4 2015-09-01 2015-09-13
Output for rfc.property-hooks
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/3ngKF:4 Stack trace: #0 /in/3ngKF(4): DateTime->modify('first day of mo...') #1 {main} thrown in /in/3ngKF on line 4
Process exited with code 255.

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