Doc #78603 [Com]: DateTime::createFromFormat() missing component behaviour change

Edit report at https://bugs.php.net/bug.php?id=78603&edit=1 ID: 78603 Comment by: chris dot smith at widerplan dot com Reported by: chris dot smith at widerplan dot com Summary: DateTime::createFromFormat() missing component behaviour change Status: Open Type: Documentation Problem Package: Date/time related Operating System: Linux PHP Version: 7.3.10 Block user comment: N Private report: N New Comment: You are probably correct about it being documentation but there could also be some tests added to ensure the behaviour does not change in future. Previous Comments: ------------------------------------------------------------------------ [2019-09-27 14:05:37] requinix@php.net If it's been this way since PHP 5.3 then the problem is the documentation. ------------------------------------------------------------------------ [2019-09-27 14:04:04] chris dot smith at widerplan dot com Description: ------------ I'm not sure if this is a problem with the documentation or code. The documentation states: > If format does not contain the character ! then portions of the generated time which are not > specified in format will be set to the current system time. When executing the following based on the documentation I'd expect the hour, minute and seconds to be set to the current time however they are set to the epoch. DateTime::createFromFormat('u', '123456'); // PHP < 7.3: 2019-09-27 14:50:40.123456 // PHP >= 7.3: 2019-09-27 00:00:00.123456 Further investigation led me to discover that the following example also contradicts the documentation and has been the case since the days of PHP 5.3. DateTimeImmutable::createFromFormat('s', '12'); // 2019-09-27 00:00:12.000000 // Expected (per docs): 2019-09-27 14:50:12.000000 https://3v4l.org/v2bib I ran a git bisect to identify when the microsecond handling changed which found: 09340ea9b9b2a06c6f1369502806640779073885 Test script: --------------- <?php $dt1 = DateTime::createFromFormat('u', '123456'); $dt2 = DateTime::createFromFormat('s', '25'); var_dump($dt1->format('H:i')); var_dump($dt2->format('H:i:s')); Expected result: ---------------- string(5) "14:29" string(8) "14:29:25" Actual result: -------------- string(5) "00:00" string(8) "00:00:25" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78603&edit=1