[wp-trac] [WordPress Trac] #59716: Deprecated messages exporting post meta with meta_value null from PHP 8.1

[WordPress Trac]

#59716: Deprecated messages exporting post meta with meta_value null from PHP 8.1
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 Reporter:  bobbingwide   |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Export        |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  php81         |     Focuses:
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Comment (by jrf):

 @bobbingwide Thanks for reporting this. This will need a backtrace to see
 the exact code path as this should be solved in the function where the
 data is originally passed around, not in the `wxr_cdata()` function, which
 is clearly and explicitly marked as only accepting strings.

 If the solution suggested in the issue description would be applied, we'd
 be ''hiding'' the problem instead of fixing it.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59716#comment:2>
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