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<?php $start = new DateTime('2010-12-02'); $start->modify('first day of this month'); $end = new DateTime('2012-05-06'); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); $dateStr = ''; foreach ($period as $dt) { $dateStr = $dateStr . "'". $dt->format("Y-m")."-01'".", "; } $dateStr = substr($dateStr, 0, -2); echo $dateStr;
Output for git.master, git.master_jit, rfc.property-hooks
'2010-12-01', '2011-01-01', '2011-02-01', '2011-03-01', '2011-04-01', '2011-05-01', '2011-06-01', '2011-07-01', '2011-08-01', '2011-09-01', '2011-10-01', '2011-11-01', '2011-12-01', '2012-01-01', '2012-02-01', '2012-03-01', '2012-04-01', '2012-05-01'

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