[wp-trac] [WordPress Trac] #62362: Multiple PHP Warnings for "Undefined array key 'host'" and "Undefined array key 'scheme', " in wp-includes/canonical.php file

[WordPress Trac]

#62362: Multiple PHP Warnings for "Undefined array key 'host'" and "Undefined array
key 'scheme'," in wp-includes/canonical.php file
----------------------------+------------------------------
 Reporter:  designdata2013  |       Owner:  (none)
     Type:  defect (bug)    |      Status:  new
 Priority:  normal          |   Milestone:  Awaiting Review
Component:  Canonical       |     Version:  6.6.2
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
----------------------------+------------------------------

Old description:

> I am trying to figure out what is going on on many of the WordPress
> websites I maintain. They are all up to date and on PHP 8.0 or higher.
> Here is an example of the PHP Warning I am getting in the error log. I
> don't want to make changes to the canonical.php file because it will
> simply be overwritten with the next WordPress core update. I'm trying to
> figure out if it is a WordPress core issue or a conflict with  a theme or
> plugin. Although these websites have different themes and different
> plugins, which makes me suspect it might be a WordPress Core issue. Here
> is the Error:
> [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
> /home/xxxxxxxx/public_html/wp-includes/canonical.php on line 716
> [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
> /home/xxxxxxxx/public_html/wp-includes/canonical.php on line 727
> [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
> /home/xxxxxxx/public_html/wp-includes/canonical.php on line 730
> [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "scheme" in
> /home/xxxxxxx/public_html/wp-includes/canonical.php on line 751

New description:

 I am trying to figure out what is going on on many of the WordPress
 websites I maintain. They are all up to date and on PHP 8.0 or higher.
 Here is an example of the PHP Warning I am getting in the error log. I
 don't want to make changes to the canonical.php file because it will
 simply be overwritten with the next WordPress core update. I'm trying to
 figure out if it is a WordPress core issue or a conflict with  a theme or
 plugin. Although these websites have different themes and different
 plugins, which makes me suspect it might be a WordPress Core issue. Here
 is the Error:
 {{{
 [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
 /home/xxxxxxxx/public_html/wp-includes/canonical.php on line 716
 [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
 /home/xxxxxxxx/public_html/wp-includes/canonical.php on line 727
 [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "host" in
 /home/xxxxxxx/public_html/wp-includes/canonical.php on line 730
 [07-Nov-2024 17:10:26 UTC] PHP Warning:  Undefined array key "scheme" in
 /home/xxxxxxx/public_html/wp-includes/canonical.php on line 751
 }}}

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Comment (by sabernhardt):

 The same errors are listed in #62334. Is this the same issue?

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Ticket URL: <https://core.trac.wordpress.org/ticket/62362#comment:1>
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