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\DateInterval 1.5s added to DateTimeInterface is rounded down since PHP 8.1.0 #9106
Description
Description
The following code:
<?php
$start = new \DateTimeImmutable("2020-01-01 00:00:00 UTC");
$oneAndHalfSec = new \DateInterval("PT1S");
$oneAndHalfSec->f = 0.5;
$t1 = $start->add($oneAndHalfSec);
$t2 = $t1->add($oneAndHalfSec);
$t3 = $t2->add($oneAndHalfSec);
$t4 = $t3->add($oneAndHalfSec);
var_dump($start->getTimestamp());
var_dump($t1->getTimestamp());
var_dump($t2->getTimestamp());
var_dump($t3->getTimestamp());
var_dump($t4->getTimestamp());Resulted in this output in PHP 8.1.0 - 8.1.8:
int(1577836800)
int(1577836801)
int(1577836802)
int(1577836803)
int(1577836804)
But I expected this output instead, like in PHP 7.4.0 - 7.4.30, 8.0.1 - 8.0.21:
int(1577836800)
int(1577836801)
int(1577836803)
int(1577836804)
int(1577836806)
PHP Version
8.1.8
Operating System
No response
Activity
cmb69 commentedon Jul 23, 2022
Confirmed: https://3v4l.org/jV4V0. The issue is similar to #8964, but this time it is about
timelib_add_wall()instead oftimelib_sub_wall(). Particularly:php-src/ext/date/lib/interval.c
Lines 367 to 371 in eff9aed
The addition in line 367 yields the correct result for the second addition (
s=2,us=1000000), and the followingtimelib_do_normalize()correctly normalizes (s=3,us=0), but sse is not properly updated.derickr commentedon Jul 28, 2022
This is now fixed through #9176
norberttech commentedon Jul 28, 2022
Thanks!