Bug #71826 [NEW]: DateTime::diff confuse on timezone 'Asia/Tokyo'

From: sukobuto at gmail dot com Operating system: CentOS 6.7 PHP version: 5.6.19 Package: Date/time related Bug Type: Bug Bug description:DateTime::diff confuse on timezone 'Asia/Tokyo' Description: ------------ In some conditions, DateTime::diff makes a mistake on month-section. For example, the gap of Feb 1 and Mar 1 is 1 month. But output was "0 month 28 days" in timezone Asia/Tokyo. ("1 month 0 days" in timezone UTC) Test script: --------------- https://wandbox.fetus.jp/permlink/zgdq2iE1VuL9zM50 Expected result: ---------------- a: 2015-2-1 <--> 2015-3-1 DateInterval Object ( [y] => 0 [m] => 1 [d] => 0 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) b: 2015-3-1 <--> 2015-3-29 DateInterval Object ( [y] => 0 [m] => 0 [d] => 28 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) c: 2015-4-1 <--> 2015-4-29 DateInterval Object ( [y] => 0 [m] => 0 [d] => 28 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) Actual result: -------------- a(Asia/Tokyo): 2015-2-1 <--> 2015-3-1 DateInterval Object ( [y] => 0 [m] => 0 [d] => 28 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) b(Asia/Tokyo): 2015-3-1 <--> 2015-3-29 DateInterval Object ( [y] => 0 [m] => 1 [d] => 0 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) c(Asia/Tokyo): 2015-4-1 <--> 2015-4-29 DateInterval Object ( [y] => 0 [m] => 0 [d] => 28 [h] => 0 [i] => 0 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 28 [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=71826&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71826&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71826&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71826&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71826&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71826&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71826&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71826&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71826&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71826&r=support Expected behavior: https://bugs.php.net/fix.php?id=71826&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71826&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71826&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71826&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71826&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71826&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71826&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71826&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71826&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71826&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71826&r=mysqlcfg