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<?php for ($i = 1; $i <= 12; $i++) { $date = DateTime::createFromFormat('Y-m-d h:i:s', '2013-' . str_pad($i, '0', STR_PAD_LEFT) . '-29 00:00:00'); var_dump($date->format('Y-m-d'), $date->modify('+1 month')->format('Y-m-d')); echo "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "2013-01-29" string(10) "2013-03-01" string(10) "2013-03-01" string(10) "2013-04-01" string(10) "2013-03-29" string(10) "2013-04-29" string(10) "2013-04-29" string(10) "2013-05-29" string(10) "2013-05-29" string(10) "2013-06-29" string(10) "2013-06-29" string(10) "2013-07-29" string(10) "2013-07-29" string(10) "2013-08-29" string(10) "2013-08-29" string(10) "2013-09-29" string(10) "2013-09-29" string(10) "2013-10-29" string(10) "2013-10-29" string(10) "2013-11-29" string(10) "2013-11-29" string(10) "2013-12-29" string(10) "2013-12-29" string(10) "2014-01-29"

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