__debugInfo() does nothing on classes extending DateTime

[terrafrost]

Description

The following code:

<?php

class Demo extends DateTime
{
    public function __debugInfo(): array
    {
        return ['value' => 'zzz'];
    }
}

$d = new Demo();
var_dump($d);

Resulted in this output:

object(Demo)#1 (3) {
  ["date"]=>
  string(26) "2023-05-24 15:59:35.014710"
  ["timezone_type"]=>
  int(3)
  ["timezone"]=>
  string(16) "Europe/Amsterdam"
}

But I expected this output instead:

object(Demo)#1 (1) {
  ["value"]=>
  string(3) "zzz"
}

PHP Version

PHP 8.2.6

Operating System

Windows 11