Bug #73269 [Opn->Nab]: DateTime::create_from_format treats d like j for day which is inconsistent

Edit report at https://bugs.php.net/bug.php?id=73269&edit=1 ID: 73269 Updated by: derick@php.net Reported by: contactme at antonydandrea dot com Summary: DateTime::create_from_format treats d like j for day which is inconsistent -Status: Open +Status: Not a bug Type: Bug Package: Date/time related Operating System: Ubuntu 16.04.2 PHP Version: 7.0.11 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php This is by design, and documented on the createFromFormat page: http://php.net/manual/en/datetime.createfromformat.php#refsect1-datetime.createfromformat-parameters Previous Comments: ------------------------------------------------------------------------ [2016-10-08 11:39:22] contactme at antonydandrea dot com Made title clearer ------------------------------------------------------------------------ [2016-10-08 11:33:07] contactme at antonydandrea dot com Description: ------------ In the documentation, 'd' for dates is supposed to be a 2 digit character. So if it is less than 10, there is a 0 in front, e.g. 09. DateTime::createfromformat is supposed to "Parses a time string according to a specified format" return false on failure. I would expect 'd' to reject strings that did not have two characters for strings. Yet it seems to accept it as valid like 'j'. It looks like PHP tries to be clever and automatically treat is as 'j', but I think this behaviour is inconsistent. Test script: --------------- $dateObj = date_create_from_format('Y-m-d', '1930-12-3'); var_dump($dateObj->format('Y-m-d'); Expected result: ---------------- I expect that for the sake of consistency, PHP returns false and fails to create an object based on the format. Actual result: -------------- It returns the object and the var_dump has the string "1930-12-03". ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73269&edit=1