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<?php $star='1389740400'; $endDate='1394838000'; $start=new DrupalDateTime(); $start->setTimestamp($star); $start->modify('first day of this month'); $end = new DrupalDateTime(); $end->setTimestamp($endDate); $end->modify('first day of next month'); $interval = \DateInterval::createFromDateString('1 month'); $period = new \DatePeriod($start, $interval, $end,0);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Class "DrupalDateTime" not found in /in/kEbuY:5 Stack trace: #0 {main} thrown in /in/kEbuY on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Class 'DrupalDateTime' not found in /in/kEbuY:5 Stack trace: #0 {main} thrown in /in/kEbuY on line 5
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Class 'DrupalDateTime' not found in /in/kEbuY on line 5
Process exited with code 255.

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