[wp-trac] [WordPress Trac] #48001: get_sites() generates a PHP warning

[WordPress Trac]

#48001: get_sites() generates a PHP warning
--------------------------------+-----------------------------
 Reporter:  henry.wright        |      Owner:  (none)
     Type:  defect (bug)        |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Networks and Sites  |    Version:  5.2.3
 Severity:  normal              |   Keywords:
  Focuses:  multisite           |
--------------------------------+-----------------------------
 The following usage of `get_sites()` generates a PHP warning.

 {{{
 $sites = get_sites(
     [
         'search'         => 'foo',
         'search_columns' => 'domain'
     ]
 );
 }}}

 > Warning: array_intersect(): Argument #1 is not an array in wp-includes
 /class-wp-site-query.php on line 563

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Ticket URL: <https://core.trac.wordpress.org/ticket/48001>
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