[wp-trac] [WordPress Trac] #58162: Undefined array key PHP Warnings

[WordPress Trac]

#58162: Undefined array key PHP Warnings
------------------------------+-----------------------------
 Reporter:  onlanka           |      Owner:  (none)
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Canonical         |    Version:  6.2
 Severity:  major             |   Keywords:  needs-patch
  Focuses:  coding-standards  |
------------------------------+-----------------------------
 Recently I upgraded my server's PHP version from 7.4 to 8.1.

 Now I'm getting following error lines in the **error_log** file.

 {{{
 [18-Apr-2023 07:13:55 UTC] PHP Warning:  Undefined array key "00" in
 /some_path/public_html/wp-includes/class-wp-locale.php on line 319
 [18-Apr-2023 07:57:56 UTC] PHP Warning:  Undefined array key "path" in
 /some_path/public_html/wp-includes/canonical.php on line 592
 [18-Apr-2023 14:20:18 UTC] PHP Warning:  Undefined array key "host" in
 /some_path/public_html/wp-includes/canonical.php on line 689
 [18-Apr-2023 14:20:18 UTC] PHP Warning:  Undefined array key "host" in
 /some_path/public_html/wp-includes/canonical.php on line 698
 [18-Apr-2023 14:20:18 UTC] PHP Warning:  Undefined array key "host" in
 /some_path/public_html/wp-includes/canonical.php on line 701
 [18-Apr-2023 14:20:18 UTC] PHP Warning:  Undefined array key "scheme" in
 /some_path/public_html/wp-includes/canonical.php on line 722
 }}}

 And also following errors were found:

 {{{
 [18-Apr-2023 21:51:53 UTC] PHP Warning:  Attempt to read property
 "post_content" on null in /some_path/public_html/wp-content/themes/boldr-
 lite/functions.php on line 267
 [18-Apr-2023 21:51:53 UTC] PHP Warning:  Attempt to read property
 "post_content" on null in /some_path/public_html/wp-content/themes/boldr-
 lite/functions.php on line 268
 }}}

 But if I switch back to PHP 7.4, no **error_log** is reported.

 If someone from WordPress needs to investigate, I can give access to my
 website privately.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/58162>
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