[wp-trac] [WordPress Trac] #48599: Warning: count(): Parameter must be an array or an object that implements Countable in ../wp-admin/includes/plugin.php on line 1392

[WordPress Trac]

#48599: Warning: count(): Parameter must be an array or an object that implements
Countable in ../wp-admin/includes/plugin.php on line 1392
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 Reporter:  ispreview                            |       Owner:
                                                 |  adamsilverstein
     Type:  defect (bug)                         |      Status:  accepted
 Priority:  normal                               |   Milestone:  5.3.1
Component:  Administration                       |     Version:  5.3
 Severity:  normal                               |  Resolution:
 Keywords:  dev-feedback has-patch needs-        |     Focuses:  ui
  testing                                        |
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Comment (by 123host):

 Replying to [comment:16 garrett-eclipse]:

 > Two workarounds;
 > 1. Having the `$parent_slug` and `$menu_slug` for the `add_submenu_page`
 as unique avoids `$submenu[ $parent_slug ]` being undefined.
 > 2. Not providing the `$position` on the `add_submenu_page` call also
 avoids this as it avoids the reordering code where count is called here -
 https://github.com/WordPress/WordPress/blob/master/wp-
 admin/includes/plugin.php#L1393-L1412


 Number 2 seems to solve this for now.  Thanks

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Ticket URL: <https://core.trac.wordpress.org/ticket/48599#comment:18>
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