WP_Query's 'fields' => 'ids' still returns an array of strings

[SergeyBiryukov]

#27252 attempted to make WP_Query's 'fields' => 'ids' or 'fields' => 'id=>parent' return an array of integers instead of numeric strings. However, the fix was incomplete.

This returns an array of integers:

$query = new WP_Query();
$posts = $query->query( array( 'fields' => 'ids' ) );
var_dump( $posts );

array(1) {
  [0]=>
  int(131)
}

This still returns an array of strings:

$query = new WP_Query( array( 'fields' => 'ids' ) );
var_dump( $query->posts );

array(1) {
  [0]=>
  string(3) "131"
}

The unit test added in [27686] didn't catch this, because it only tested $q->query() and not $q->posts.

[DrewAPicture]

OK (1 test, 7 assertions)

Patch fixes it for me, and tests pass.

[boonebgorges]

+1

[danielbachhuber]

Thanks for the catch, @SergeyBiryukov

[SergeyBiryukov]

In 31324:

When using WP_Query's 'fields' => 'ids' (or 'fields' => 'id=>parent'), make sure the returned result is always an array of integers.

fixes #31194. see #27252.