Parser DateTime vs DateTimeZone

[hormus]

Description

The following code:

<?php
$date = new DateTime('2022-10-30 02:00:00', new DateTimeZone('Europe/Amsterdam'));
$date2 = new DateTime('2022-10-30 02:00:00 Europe/Amsterdam');
var_dump($date->format('U') == $date2->format('U'));

Resulted in this output from php 8.1.7:

false

But I expected this output instead:

true

PHP Version

php 8.1.7

Operating System

Irrelevant

[damianwadley]

Looks good from here. https://3v4l.org/9Ot50

What actual timestamps are you seeing?

[hormus]

@damianwadley

<?php

$date = new DateTime('2022-10-30 02:00:00', new DateTimeZone('Europe/Amsterdam'));
$date2 = new DateTime('2022-10-30 02:00:00 Europe/Amsterdam');
$output_utc1 = $date->format('U');
$output_utc2 = $date2->format('U');
var_dump($output_utc1, $output_utc2, $output_utc1 == $output_utc2);
?>

Correct:
string(10) "1667091600" string(10) "1667091600" bool(true)
not Correct from php 8.1.7:
string(10) "1667091600" string(10) "1667088000" bool(false)

30 ott 2022 - Daylight Saving Time Ends
When local daylight time is about to reach
sunday 30 ottobre 2022, 3.00.00 clocks are turned backward 1 hour to
sunday 30 ottobre 2022, 2.00.00 local standard time instead. CEST to CET

1667091600 or with bug 1667088000
object(DateTime)#2 (3) { ["date"]=> string(26) "2022-10-30 02:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
With bug does not comply with the proposed rfc specification https://wiki.php.net/rfc/datetime_and_daylight_saving_time

[derickr]

This is a duplicate of #9165, which has a better example and is better articulated. I'm therefore closing this one.