note 124573 added to dateperiod.construct

The parameter isostr should accept an ISO 8601 format, but doing this is not work : <?php $dateStart = date_create('first day of next month this year'); $isoStr = $dateStart ->format(DateTimeInterface::ISO8601); $datePeriod = new DatePeriod("R10/{$isoStr}/P1M"); // Throw Exception : DatePeriod::__construct(): Unknown or bad format (R10/2020-02-01T22:52:26+0000Z/P1M) // While doing it by this way works $datePeriod = new DatePeriod($dateStart , \DateInterval::createFromDateString("+1 month"), 10); ?> ---- Server IP: 45.112.84.4 Probable Submitter: 185.85.3.168 (proxied: 2a01:e35:242d:22e0:6d2b:1d5f:7854:5dfa) ---- Manual Page -- http://php.net/manual/en/dateperiod.construct.php Edit -- https://master.php.net/note/edit/124573 Del: integrated -- https://master.php.net/note/delete/124573/integrated Del: useless -- https://master.php.net/note/delete/124573/useless Del: bad code -- https://master.php.net/note/delete/124573/bad+code Del: spam -- https://master.php.net/note/delete/124573/spam Del: non-english -- https://master.php.net/note/delete/124573/non-english Del: in docs -- https://master.php.net/note/delete/124573/in+docs Del: other reasons-- https://master.php.net/note/delete/124573 Reject -- https://master.php.net/note/reject/124573 Search -- https://master.php.net/manage/user-notes.php