[wp-trac] [WordPress Trac] #12212: post__in and other array_key can't manage empty array properly

[WordPress Trac]

#12212: post__in and other array_key can't manage empty array properly
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 Reporter:  lifeless85       |       Owner:  ryan
     Type:  defect (bug)     |      Status:  closed
 Priority:  normal           |   Milestone:
Component:  Query            |     Version:  2.9.1
 Severity:  normal           |  Resolution:  wontfix
 Keywords:  has-patch close  |     Focuses:
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Comment (by todditron):

 I know this has been closed for a decade, but just ran into this as a
 problem in 2021.

 The problem isn't that we don't have a workaround, the problem is that
 there is no way to anticipate that we need the workaround

 In my case, I was developing a custom members site with access-protected
 course pages, and ended up showing ALL courses to the members without any
 authorization rather than ZERO courses

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Ticket URL: <https://core.trac.wordpress.org/ticket/12212#comment:29>
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