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run code in 150+ php & hhvm versions
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<?php $start = (new DateTime('1 year ago'))->modify('first day of the month'); $end = (new DateTime())->modify('first day of the month'); $interval = new DateInterval('P1M'); $period = new DatePeriod($start, $interval, $end); $months = array(); foreach ($period as $dt) { $months[] = $dt->format('Y-m-d'); } $reverse_months = array_reverse($months); print_r($reverse_months);
Output for 7.0.0 - 7.1.0
Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 2 Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 3 Fatal error: Uncaught Exception: DatePeriod::__construct(): This constructor accepts either (DateTimeInterface, DateInterval, int) OR (DateTimeInterface, DateInterval, DateTime) OR (string) as arguments. in /in/E8c8k:5 Stack trace: #0 /in/E8c8k(5): DatePeriod->__construct(false, Object(DateInterval), false) #1 {main} thrown in /in/E8c8k on line 5
Process exited with code 255.
Output for hhvm-3.12.0
Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 2 Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 3 Catchable fatal error: Argument 1 passed to DatePeriod::__construct() must implement interface DateTimeInterface, bool given in /in/E8c8k on line 5
Process exited with code 255.
Output for hhvm-3.10.0
Array ( [0] => 2016-02-01 [1] => 2016-01-01 [2] => 2015-12-01 [3] => 2015-11-01 [4] => 2015-10-01 [5] => 2015-09-01 [6] => 2015-08-01 [7] => 2015-07-01 [8] => 2015-06-01 [9] => 2015-05-01 [10] => 2015-04-01 [11] => 2015-03-01 )
Output for 5.5.24 - 5.6.28
Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 2 Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 3 Fatal error: Uncaught exception 'Exception' with message 'DatePeriod::__construct(): This constructor accepts either (DateTimeInterface, DateInterval, int) OR (DateTimeInterface, DateInterval, DateTime) OR (string) as arguments.' in /in/E8c8k:5 Stack trace: #0 /in/E8c8k(5): DatePeriod->__construct(false, Object(DateInterval), false) #1 {main} thrown in /in/E8c8k on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 2 Warning: DateTime::modify(): Failed to parse time string (first day of the month) at position 13 (t): The timezone could not be found in the database in /in/E8c8k on line 3 Fatal error: Uncaught exception 'Exception' with message 'DatePeriod::__construct(): This constructor accepts either (DateTime, DateInterval, int) OR (DateTime, DateInterval, DateTime) OR (string) as arguments.' in /in/E8c8k:5 Stack trace: #0 /in/E8c8k(5): DatePeriod->__construct(false, Object(DateInterval), false) #1 {main} thrown in /in/E8c8k on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/E8c8k on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/E8c8k on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/E8c8k on line 2
Process exited with code 255.