Datetime created from negative float timestamp is not monotonic (fraction part is added instead of substracted) #7758
Description
Description
The following code:
foreach ([0.4, 0, -0.4, -1, -1.4] as $ts) {
$date = new DateTime('@' . $ts);
print_r($date);
}Diff of current output vs expected:
DateTime Object
(
[date] => 1970-01-01 00:00:00.400000
[timezone_type] => 1
[timezone] => +00:00
)
DateTime Object
(
[date] => 1970-01-01 00:00:00.000000
[timezone_type] => 1
[timezone] => +00:00
)
DateTime Object
(
- [date] => 1970-01-01 00:00:00.400000
+ [date] => 1969-12-31 23:59:59.600000
[timezone_type] => 1
[timezone] => +00:00
)
DateTime Object
(
[date] => 1969-12-31 23:59:59.000000
[timezone_type] => 1
[timezone] => +00:00
)
DateTime Object
(
- [date] => 1969-12-31 23:59:59.400000
+ [date] => 1969-12-31 23:59:58.600000
[timezone_type] => 1
[timezone] => +00:00
)PHP Version
present since PHP 8.0, should be fixed starting this version
it seems the issue is present only when TS is parsed, getTimestamp / format('u') seems correct across all PHP versions - https://3v4l.org/CjJLf