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<?php $startYear = 2010; $array = []; for ($x = $startYear; $x <= date('Y'); $x ++) { $date = DateTime::createFromFormat('Y-m-d\TH:i:s', $x . '-01-01T00:00:00'); $array[$x] = $date->format('Y-m-d\TH:i:s'); } var_dump($array); $array2 = []; $year = 2010; for ($x = 1; $x <= 12; $x ++) { $array2[$year.'-'.$x] = (new DateTime($year.'-'.$x.'-01T00:00:00'))->format('Y-m-d\TH:i:s'); } var_dump($array2);
Output for git.master, git.master_jit, rfc.property-hooks
array(9) { [2010]=> string(19) "2010-01-01T00:00:00" [2011]=> string(19) "2011-01-01T00:00:00" [2012]=> string(19) "2012-01-01T00:00:00" [2013]=> string(19) "2013-01-01T00:00:00" [2014]=> string(19) "2014-01-01T00:00:00" [2015]=> string(19) "2015-01-01T00:00:00" [2016]=> string(19) "2016-01-01T00:00:00" [2017]=> string(19) "2017-01-01T00:00:00" [2018]=> string(19) "2018-01-01T00:00:00" } array(12) { ["2010-1"]=> string(19) "2010-01-01T00:00:00" ["2010-2"]=> string(19) "2010-02-01T00:00:00" ["2010-3"]=> string(19) "2010-03-01T00:00:00" ["2010-4"]=> string(19) "2010-04-01T00:00:00" ["2010-5"]=> string(19) "2010-05-01T00:00:00" ["2010-6"]=> string(19) "2010-06-01T00:00:00" ["2010-7"]=> string(19) "2010-07-01T00:00:00" ["2010-8"]=> string(19) "2010-08-01T00:00:00" ["2010-9"]=> string(19) "2010-09-01T00:00:00" ["2010-10"]=> string(19) "2010-10-01T00:00:00" ["2010-11"]=> string(19) "2010-11-01T00:00:00" ["2010-12"]=> string(19) "2010-12-01T00:00:00" }

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