PHP 8.5 unpack behavior change with "N"

[thekid]

Description

The following code:

<?php

var_dump(unpack(
  "cversion/c3flags/Ncreated/Nmodified/Nscale/Nduration",
  "\000\000\000\000\341,a\024\341,a\025\000\000\003\350\000\000\r\254"
));

Resulted in this output:

array(8) {
  ["version"]=>
  int(0)
  ["flags1"]=>
  int(0)
  ["flags2"]=>
  int(0)
  ["flags3"]=>
  int(0)
  ["created"]=>
  int(-517185260)
  ["modified"]=>
  int(-517185259)
  ["scale"]=>
  int(1000)
  ["duration"]=>
  int(3500)
}

But I expected this output instead:

array(8) {
  ["version"]=>
  int(0)
  ["flags1"]=>
  int(0)
  ["flags2"]=>
  int(0)
  ["flags3"]=>
  int(0)
  ["created"]=>
  int(3777782036)
  ["modified"]=>
  int(3777782037)
  ["scale"]=>
  int(1000)
  ["duration"]=>
  int(3500)
}

See https://3v4l.org/1rP6A

PHP Version

PHP 8.5.0-dev (cli) (built: Sep  4 2025 23:33:47) (NTS Visual C++ 2022 x86)
Copyright (c) The PHP Group
Zend Engine v4.5.0-dev, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.0-dev, Copyright (c), by Zend Technologies

Operating System

Windows

[thekid]

Sorry for the SPAM, this is me downloading the x86 binary from https://github.com/shivammathur/php-builder-windows/releases instead of x64 😖