Bug #66485 [NEW]: 01.01.2014 diff 01.02.2014 is 30 days instead of 1 month

From: kuba at pdesign dot pl Operating system: Windows 7 PHP version: 5.5.8 Package: Output Control Bug Type: Bug Bug description:01.01.2014 diff 01.02.2014 is 30 days instead of 1 month Description: ------------ --- From manual page: http://www.php.net/datetime.diff --- see the actual result Test script: --------------- // date format DD-MM-YYYY $start = new DateTime('01-02-2014'); $stop = new DateTime('01-03-2014'); $diff = $start->diff($stop); echo $diff->format('%d days %m months'); Expected result: ---------------- 0 days 1 months Actual result: -------------- 28 days 0 months -- Edit bug report at https://bugs.php.net/bug.php?id=66485&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=66485&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=66485&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=66485&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=66485&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=66485&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=66485&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=66485&r=needscript Try newer version: https://bugs.php.net/fix.php?id=66485&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=66485&r=support Expected behavior: https://bugs.php.net/fix.php?id=66485&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=66485&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=66485&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=66485&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66485&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=66485&r=dst IIS Stability: https://bugs.php.net/fix.php?id=66485&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=66485&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=66485&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=66485&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=66485&r=mysqlcfg