Bug #69211 [Opn]: DateTime Diff is off by 3

Edit report at https://bugs.php.net/bug.php?id=69211&edit=1 ID: 69211 User updated by: lr at cwd dot at Reported by: lr at cwd dot at -Summary: DateTime Diff is off by 2 +Summary: DateTime Diff is off by 3 Status: Open Type: Bug Package: Date/time related Operating System: Linux PHP Version: 5.4.38 Block user comment: N Private report: N New Comment: summary fix Previous Comments: ------------------------------------------------------------------------ [2015-03-10 12:40:51] lr at cwd dot at 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 this bug report at https://bugs.php.net/bug.php?id=69211&edit=1