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[2021-04-06 19:52 UTC] derick@php.net
-Status: Open
+Status: Closed
-Assigned To:
+Assigned To: derick
[2021-04-06 19:52 UTC] derick@php.net
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Last updated: Sat Oct 25 20:00:01 2025 UTC |
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) }