3v4l.org

run code in 300+ PHP versions simultaneously
<?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 8.3.0 - 8.3.6
Fatal error: Uncaught DateMalformedStringException: 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:2 Stack trace: #0 /in/E8c8k(2): DateTime->modify('first day of th...') #1 {main} thrown in /in/E8c8k on line 2
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
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 TypeError: DatePeriod::__construct() accepts (DateTimeInterface, DateInterval, int [, int]), or (DateTimeInterface, DateInterval, DateTime [, int]), or (string [, int]) 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 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
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 5.5.24 - 5.5.35, 5.6.8 - 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 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 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 - 4.3.11, 4.4.0 - 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.
preferences:
215.76 ms | 401 KiB | 329 Q