3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $start = new DateTime(date('Y-m-d')); $start->modify('first day of this month'); $end = new DateTime(date('Y-m-d', strtotime('-1 years'))); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); die(var_dump(date('Y-m-d', strtotime('-1 years')))); foreach ($period as $dt) { echo $dt->format("Y-m") . "<br>\n"; }
based on 7VU5r
Output for 5.3.0 - 7.1.0
string(10) "2013-09-01"
Output for 5.2.13 - 5.2.17
Warning: DateTime::modify(): Failed to parse time string (first day of this month) at position 10 (o): The timezone could not be found in the database in /in/drfS8 on line 3 Warning: DateTime::modify(): Failed to parse time string (first day of next month) at position 10 (o): The timezone could not be found in the database in /in/drfS8 on line 5 Fatal error: Class 'DateInterval' not found in /in/drfS8 on line 6
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Fatal error: Class 'DateInterval' not found in /in/drfS8 on line 6
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/drfS8 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/drfS8 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/drfS8 on line 2