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[2025-08-04 06:49 UTC] kenji dot uui at gmail dot com
Description:
------------
DateTimeZone::getTransitions() changed between PHP 8.0.13 and 8.1.0.
Test script:
---------------
<?php
$tz = new DateTimeZone('America/Chicago');
$start = 1293861600;
$end = 1357020000;
$transitions = $tz->getTransitions($start, $end);
var_dump($transitions);
Expected result:
----------------
array(5) {
[0]=>
array(5) {
["ts"]=>
int(1293861600)
["time"]=>
string(24) "2025-08-04T06:00:00+0000"
["offset"]=>
int(-21600)
["isdst"]=>
bool(false)
["abbr"]=>
string(3) "CST"
}
[1]=>
array(5) {
["ts"]=>
int(1300003200)
["time"]=>
string(24) "2025-08-04T08:00:00+0000"
["offset"]=>
int(-18000)
["isdst"]=>
bool(true)
["abbr"]=>
string(3) "CDT"
}
[2]=>
array(5) {
["ts"]=>
int(1320562800)
["time"]=>
string(24) "2025-08-04T07:00:00+0000"
["offset"]=>
int(-21600)
["isdst"]=>
bool(false)
["abbr"]=>
string(3) "CST"
}
[3]=>
array(5) {
["ts"]=>
int(1331452800)
["time"]=>
string(24) "2025-08-04T08:00:00+0000"
["offset"]=>
int(-18000)
["isdst"]=>
bool(true)
["abbr"]=>
string(3) "CDT"
}
[4]=>
array(5) {
["ts"]=>
int(1352012400)
["time"]=>
string(24) "2025-08-04T07:00:00+0000"
["offset"]=>
int(-21600)
["isdst"]=>
bool(false)
["abbr"]=>
string(3) "CST"
}
}
Actual result:
--------------
array(1) {
[0]=>
array(5) {
["ts"]=>
int(1293861600)
["time"]=>
string(24) "2025-08-04T06:00:00+0000"
["offset"]=>
int(-18000)
["isdst"]=>
bool(true)
["abbr"]=>
string(3) "CDT"
}
}
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Last updated: Mon Aug 04 04:00:03 2025 UTC |
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Currently @derick's patch from php> = 8.1.0beta3 without parameters returns from one (if it has never used transition) or more transition arrays. Otherwise with parameter it returns the last transition period of the year UTC which is different from its local timezone if different from UTC. 2025-08-04 00:00:00 America/Chicago and 2025-08-04 06:00:00 UTC. Do you want to calculate the time of the year between two dates? that is to say: array(5) { ["ts"]=> int(1300003200) ["time"]=> string(24) "2025-08-04T08:00:00+0000" ["offset"]=> int(-18000) ["isdst"]=> bool(true) ["abbr"]=> string(3) "CDT" } relative to fix bug 80963> Do you want to calculate the time of the year between two dates? No. Our use case is just wanting to know it is daylight saving time or not. We use DateTime::format('I').