Bug #68503 [NEW]: date_diff on two dates with timezone set localised returns wrong results

From: chris at vostron dot com Operating system: Ubuntu Trusty PHP version: 5.6.3 Package: Date/time related Bug Type: Bug Bug description:date_diff on two dates with timezone set localised returns wrong results Description: ------------ When using date_diff in a localised time zone and the date_diff will traverse a daylight saving boundary, the number of days returned is 1 fewer than expected. This is understandable given the missing hour. However, it doesn't then set the "h" value to 23, which would be expected. Other option is that if we're not going to compare hours/mins/seconds when only passed a date, it should return "m" of 3, "d" of 0 in the example script. Test script: --------------- date_default_timezone_set('Europe/London'); var_dump(date_diff(new DateTime("2015-02-01"), new DateTime("2015-05-01"))); date_default_timezone_set('UTC'); var_dump(date_diff(new DateTime("2015-02-01"), new DateTime("2015-05-01"))); Expected result: ---------------- object(DateInterval)#3 (15) { ["y"]=> int(0) ["m"]=> int(3) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } object(DateInterval)#2 (15) { ["y"]=> int(0) ["m"]=> int(3) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } -- OR -- object(DateInterval)#3 (15) { ["y"]=> int(0) ["m"]=> int(2) ["d"]=> int(30) ["h"]=> int(23) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } object(DateInterval)#2 (15) { ["y"]=> int(0) ["m"]=> int(3) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } Actual result: -------------- object(DateInterval)#3 (15) { ["y"]=> int(0) ["m"]=> int(2) ["d"]=> int(30) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } object(DateInterval)#2 (15) { ["y"]=> int(0) ["m"]=> int(3) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(89) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } -- Edit bug report at https://bugs.php.net/bug.php?id=68503&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68503&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68503&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68503&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68503&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68503&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68503&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68503&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68503&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68503&r=support Expected behavior: https://bugs.php.net/fix.php?id=68503&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68503&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68503&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68503&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68503&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68503&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68503&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68503&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68503&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68503&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68503&r=mysqlcfg