Req #67663 [Opn->Wfx]: DatePeriod not giving correct date

Edit report at https://bugs.php.net/bug.php?id=67663&edit=1 ID: 67663 Updated by: salathe@php.net Reported by: hharrysidhu at gmail dot com Summary: DatePeriod not giving correct date -Status: Open +Status: Wont fix Type: Feature/Change Request -Package: *General Issues +Package: Date/time related Operating System: Windows PHP Version: 5.5.14 Block user comment: N Private report: N New Comment: The "P1M" interval does the only sensible thing it can; it increments the month number only. "2015-01-31" + "P1M" gives "2015-02-31", which is not a valid date so the normal "roll over" behaviour occurs to give the resulting date of "2015-03-03". The feature request made here, to "give [you] 31 of every month by skipping February" seems like a very strange determination of "correct" behaviour and will not be something that we support. Previous Comments: ------------------------------------------------------------------------ [2014-07-22 02:52:34] chris at cgsmith dot net By doing format("U") I found that P1M equals 2,678,400 seconds. It looks like 'P1M' is literally translated into '31 days' ------------------------------------------------------------------------ [2014-07-21 20:52:36] hharrysidhu at gmail dot com Description: ------------ $begin = new DateTime( '2014-12-31' ); $end = new DateTime( '2016-04-31'); $interval = new DateInterval('P1M'); $daterange = new DatePeriod($begin, $interval ,$end); foreach($daterange as $date){ echo $date->format("Y-m-d") . "<br>"; } This code should give me 31 of every month by skipping February. It skips February but it changes actual date. Test script: --------------- $begin = new DateTime( '2014-12-31' ); $end = new DateTime( '2015-06-31'); $interval = new DateInterval('P1M'); $daterange = new DatePeriod($begin, $interval ,$end); foreach($daterange as $date){ echo $date->format("Y-m-d") . "<br>"; } Expected result: ---------------- 2014-12-31 2015-01-31 2015-03-31 2015-05-31 Actual result: -------------- 2014-12-31 2015-01-31 2015-03-03 2015-04-03 2015-05-03 2015-06-03 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67663&edit=1