Bug #74681 [NEW]: createFromFormat incorrect behavior if no day provided

From: raul at reyes dot solutions Operating system: Any PHP version: Irrelevant Package: Date/time related Bug Type: Bug Bug description:createFromFormat incorrect behavior if no day provided Description: ------------ Seems to default all dates to 31. if trying to create February of 2018 for example it defaults to March 3rd. DateTime::createFromFormat('my',"0218") sets the date to 2018-03-03. I would think the correct behavior is setting the date to 01 (or maybe the last day 't') Test script: --------------- $date = DateTime::createFromFormat('my',"0218"); echo $date->format('Y-m-t') . " when expecting 2018-02-01"; Expected result: ---------------- 2018-02-01 Actual result: -------------- 2018-03-03 -- Edit bug report at https://bugs.php.net/bug.php?id=74681&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74681&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74681&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74681&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74681&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74681&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74681&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74681&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74681&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74681&r=support Expected behavior: https://bugs.php.net/fix.php?id=74681&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74681&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74681&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74681&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74681&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74681&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74681&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74681&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74681&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74681&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74681&r=mysqlcfg