Bug #77235 [NEW]: DateTime::diff Wrong result if subsecond difference

From: arkham dot vm at gmail dot com Operating system: CentOs 7.5 PHP version: 7.2.12 Package: *General Issues Bug Type: Bug Bug description:DateTime::diff Wrong result if subsecond difference Description: ------------ If diffirence between two dates less than second, DateTime::diff returns more than 1 year of difference. date_diff contains same bug. Works properly on: PHP 7.2.10-0ubuntu1 (cli) (built: Sep 13 2018 13:38:55) ( NTS ) Bugged on: PHP 7.2.12 (cli) (built: Nov 6 2018 16:40:25) ( NTS ) Test script: --------------- <?php $utc = new DateTimeZone('utc'); $foo = new DateTime('2018-11-29 07:14:12.503985', $utc); $bar = new DateTime('2018-11-29 07:14:12.000000', $utc); print_r($foo->diff($bar)); Expected result: ---------------- DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 0 [i] => 0 [s] => 0 [f] => -0.503985 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) Actual result: -------------- DateInterval Object ( [y] => -1 [m] => 11 [d] => 30 [h] => 23 [i] => 59 [s] => 59 [f] => 0.496015 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) -- Edit bug report at https://bugs.php.net/bug.php?id=77235&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77235&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77235&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77235&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77235&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77235&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77235&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77235&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77235&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77235&r=support Expected behavior: https://bugs.php.net/fix.php?id=77235&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77235&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77235&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77235&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77235&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77235&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77235&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77235&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77235&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77235&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77235&r=mysqlcfg