note 111228 added to datetime.add

I've just noticed that if you add a month to a DateTime object representing the 29th January, you'll end up in March: <?php $datetime = new DateTime('29-01-2013'); echo $datetime->format('r'); // Tue, 29 Jan 2013 00:00:00 +0100 $datetime->add(new DateInterval('P1M')); echo $datetime->format('r'); // Fri, 01 Mar 2013 00:00:00 +0100 ---- Server IP: 69.147.83.199 Probable Submitter: 82.161.119.32 ---- Manual Page -- http://php.net/manual/en/datetime.add.php Edit -- https://master.php.net/note/edit/111228 Del: integrated -- https://master.php.net/note/delete/111228/integrated Del: useless -- https://master.php.net/note/delete/111228/useless Del: bad code -- https://master.php.net/note/delete/111228/bad+code Del: spam -- https://master.php.net/note/delete/111228/spam Del: non-english -- https://master.php.net/note/delete/111228/non-english Del: in docs -- https://master.php.net/note/delete/111228/in+docs Del: other reasons-- https://master.php.net/note/delete/111228 Reject -- https://master.php.net/note/reject/111228 Search -- https://master.php.net/manage/user-notes.php