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<?php $date = mktime(0, 0, 0, 1, 31); // midnight Jan 31st $nextMonth = mktime(0, 0, 0, date('n', $date) + 1, 1, date('Y', $date)); $newDate = mktime(0, 0, 0, date('n', $nextMonth), min(date('t', $nextMonth), date('j', $date)), date('Y', $nextMonth)); echo date('Y-m-d h:i:s', $newDate);

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