[wp-trac] [WordPress Trac] #43941: Add default value to register meta

[WordPress Trac]

#43941: Add default value to register meta
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 Reporter:  spacedmonkey                         |       Owner:
                                                 |  johnbillion
     Type:  enhancement                          |      Status:  reviewing
 Priority:  normal                               |   Milestone:  5.5
Component:  Options, Meta APIs                   |     Version:  4.6
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests early       |     Focuses:  rest-api
  needs-dev-note                                 |
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Comment (by spacedmonkey):

 New patch
 [https://core.trac.wordpress.org/attachment/ticket/43941/43941.16.diff
 43941.16.diff].

 Use `array_key_exists` over `isset` as isset doesn't work on null values.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43941#comment:62>
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