[wp-trac] [WordPress Trac] #54943: image_get_intermediate_size(): size data is a bool, not an array throws notice / warning (was: PHP Warnings in image_get_intermediate_size() on PHP >= 8)

[WordPress Trac]

#54943: image_get_intermediate_size(): size data is a bool, not an array throws
notice / warning
-------------------------------------------------+-------------------------
 Reporter:  fhwebdesign                          |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  Awaiting
                                                 |  Review
Component:  Media                                |     Version:  5.9
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch reporter-feedback needs-   |     Focuses:
  testing-info needs-unit-tests changes-         |
  requested                                      |
-------------------------------------------------+-------------------------
Changes (by hellofromTonya):

 * keywords:
     php80 has-patch reporter-feedback needs-testing-info needs-unit-tests
     changes-requested
     =>
     has-patch reporter-feedback needs-testing-info needs-unit-tests
     changes-requested


Old description:

> While testing my website on PHP8.0 (in my example opening the blog page),
> I noticed the following two warnings in the error log:
>

> {{{
> [27-Jan-2022 08:56:34] WARNING: [pool xxx] child 1031078 said into
> stderr: "PHP message: PHP Warning:  Trying to access array offset on
> value of type bool in /var/www/xxx/wp-includes/media.php on line 779"
> [27-Jan-2022 08:56:34] WARNING: [pool xxx] child 1031078 said into
> stderr: "PHP message: PHP Warning:  Trying to access array offset on
> value of type bool in /var/www/xxx/wp-includes/media.php on line 785"
> }}}
>
> I also noticed with a fresh install of wordpress. PHP 7.4 works great.

New description:

 While testing my website on PHP 8.0 (in my example opening the blog page),
 I noticed the following two warnings in the error log:

 {{{
 [27-Jan-2022 08:56:34] WARNING: [pool xxx] child 1031078 said into stderr:
 "PHP message: PHP Warning:  Trying to access array offset on value of type
 bool in /var/www/xxx/wp-includes/media.php on line 779"
 [27-Jan-2022 08:56:34] WARNING: [pool xxx] child 1031078 said into stderr:
 "PHP message: PHP Warning:  Trying to access array offset on value of type
 bool in /var/www/xxx/wp-includes/media.php on line 785"
 }}}

 PHP 7.4 throws a Notice.

 I also noticed with a fresh install of wordpress.

--

Comment:

 I've reworded the Summary to better reflect the issue being reported,
 while focusing it on where the error is being thrown (though likely not
 the root cause).

 I've also removed the `php80` keyword. Why? The reported issue is not only
 related to PHP 8.0. A Notice is thrown on PHP 7. Rather, the issue is: for
 some reason, there's no size data for one or more attachments.

 See the error in action on different PHP versions: https://3v4l.org/FBhtS

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/54943#comment:9>
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