Bug #69211 [NEW]: DateTime Diff is off by 2

From: lr at cwd dot at Operating system: Linux PHP version: 5.4.38 Package: Date/time related Bug Type: Bug Bug description:DateTime Diff is off by 2 Description: ------------ DateTime::diff() ist off by 3 days when year roll over Test script: --------------- <?php date_default_timezone_set('UTC'); $datetime1 = new DateTime('2015-01-01'); $datetime2 = new DateTime('2015-03-10'); $interval = $datetime1->diff($datetime2); echo $interval->format('%y years %m months and %d days')."\n"; $datetime1 = new DateTime('2014-12-31'); $datetime2 = new DateTime('2015-03-10'); $interval = $datetime1->diff($datetime2); echo $interval->format('%y years %m months and %d days')."\n"; $datetime1 = new DateTime('1951-12-31'); $datetime2 = new DateTime('2015-03-10'); $interval = $datetime1->diff($datetime2); echo $interval->format('%y years %m months and %d days')."\n"; Expected result: ---------------- 0 years 2 months and 9 days 0 years 2 months and 10 days 63 years 2 months and 10 days Actual result: -------------- 0 years 2 months and 9 days 0 years 2 months and 7 days 63 years 2 months and 7 days -- Edit bug report at https://bugs.php.net/bug.php?id=69211&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69211&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69211&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69211&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69211&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69211&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69211&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69211&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69211&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69211&r=support Expected behavior: https://bugs.php.net/fix.php?id=69211&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69211&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69211&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69211&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69211&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69211&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69211&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69211&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69211&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69211&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69211&r=mysqlcfg