DateTime::getLastErrors() not returning false when no errors/warnings

[Quirinus]

Description

The following code:

<?php

$dateTime = DateTime::createFromFormat('Y-m-d', '2022-08-26');
$lastErrors = DateTime::getLastErrors();

var_dump($lastErrors);

Resulted in this output:

array(4) {
  ["warning_count"]=>
  int(0)
  ["warnings"]=>
  array(0) {
  }
  ["error_count"]=>
  int(0)
  ["errors"]=>
  array(0) {
  }
}

But I expected this output instead:

bool(false)

Discussion

I'm not sure if this is a documentation issue or a PHP bug.

The documentation says that the return type of DateTime::getLastErrors() is array|false.
array is returned if there are errors and/or warnings, while false is returned if there's no errors nor warnings.

In actuality, false is not returned even when there are no errors/warnings - the array is returned instead, as can be seen in the above example.

Either the documentation needs to be corrected, or if it's correct, the bug needs to be fixed.

PHP Version

PHP 8.1.8, PHP 7.4.30

Operating System

No response

[cmb69]

Reported behavior confirmed: https://3v4l.org/qB6HQ

However: https://3v4l.org/1IJQh

I'm not quite sure whether this is expected behavior, or at least something that we will change in the future. @derickr, thoughts?

[derickr]

Fixed through 932586c for PHP 8.2 and later only.

[W1DJM]

Why was this not ported to the 8.1.x stream also? The bug appears in 8.1.15 also as evidenced by: https://3v4l.org/eU2ra#v8.1.15

[Quirinus]

Thanks!