Bug #65003 [NEW]: Wrong date diff

From: hcy321+php at yandex dot com Operating system: OSX PHP version: 5.4.16 Package: Date/time related Bug Type: Bug Bug description:Wrong date diff Description: ------------ DateTime::diff return wrong result for first day of month. Tested on PHP Version 5.4.10 \ 5.4.15 Test script: --------------- <?php date_default_timezone_set('Europe/Moscow'); $datetime1 = new DateTime('13-03-01'); $datetime2 = new DateTime('13-04-01'); $datetime3 = new DateTime('13-03-02'); $datetime4 = new DateTime('13-04-02'); $interval = $datetime2->diff($datetime1); echo $interval->format('%m month, %d days'), '<br>'; //1 month, 3 days $interval = $datetime4->diff($datetime3); echo $interval->format('%m month, %d days'); //1 month, 0 days Expected result: ---------------- 1 month, 0 days 1 month, 0 days Actual result: -------------- 1 month, 3 days 1 month, 0 days -- Edit bug report at https://bugs.php.net/bug.php?id=65003&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65003&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=65003&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65003&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65003&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65003&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65003&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65003&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65003&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65003&r=support Expected behavior: https://bugs.php.net/fix.php?id=65003&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65003&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65003&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65003&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65003&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65003&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65003&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65003&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65003&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65003&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65003&r=mysqlcfg