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<?php $date = new \DateTime('-4 month', new \DateTimeZone('GMT')); //echo $date->format('m-d-Y'); $quarter = ceil($date->format('n') / 3); $year = $date->format('Y'); $month = $quarter * 3 + 1; $date = \DateTime::createFromFormat('Y-n-j H:i', strval($year+1)."-$month-1 00:00"); echo $date->format('d-m-Y H:i') . "\n"; echo date('d-m-Y H:i', $date->getTimestamp());
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
01-10-2016 00:00 01-10-2016 00:00

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