[wp-trac] [WordPress Trac] #57674: unregister_setting() raises a PHP warning on unknown settings

[WordPress Trac]

#57674: unregister_setting() raises a PHP warning on unknown settings
--------------------------------+-----------------------------
 Reporter:  xknown              |      Owner:  (none)
     Type:  defect (bug)        |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Options, Meta APIs  |    Version:
 Severity:  normal              |   Keywords:  php81
  Focuses:                      |
--------------------------------+-----------------------------
 Starting from PHP 8.x, attempting to unregister an undefined setting
 results in PHP warnings: `Warning: Trying to access array offset on value
 of type null`.

 {{{
 unregister_setting( 'somethingrandom', 'somethingrandom' );
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/57674>
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