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<?php $start = (new DateTime(date('Y-m-d')))->modify('first day of this month'); $end = (new DateTime(date('Y-m-d', strtotime('-1 years'))))->modify('first day of this month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); die(var_dump($period)); foreach ($period as $dt) { echo $dt->format("Y-m"); }
Output for git.master, git.master_jit, rfc.property-hooks
object(DatePeriod)#4 (7) { ["start"]=> object(DateTime)#5 (3) { ["date"]=> string(26) "2014-09-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["current"]=> NULL ["end"]=> object(DateTime)#6 (3) { ["date"]=> string(26) "2013-09-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval"]=> object(DateInterval)#7 (10) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["f"]=> float(0) ["invert"]=> int(0) ["days"]=> bool(false) ["from_string"]=> bool(false) } ["recurrences"]=> int(1) ["include_start_date"]=> bool(true) ["include_end_date"]=> bool(false) }

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