[wp-trac] [WordPress Trac] #59195: deprecation notice triggered in post.php by passing null to parameter #2 in preg_match()

[WordPress Trac]

#59195: deprecation notice triggered in post.php by passing null to parameter #2 in
preg_match()
-------------------------------------------------+-------------------------
 Reporter:  nosilver4u                           |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  Awaiting
                                                 |  Review
Component:  Media                                |     Version:  6.3
 Severity:  normal                               |  Resolution:
 Keywords:  php81 changes-requested needs-unit-  |     Focuses:  php-
  tests needs-patch                              |  compatibility
-------------------------------------------------+-------------------------
Changes (by antpb):

 * keywords:  has-patch needs-testing php81 changes-requested => php81
     changes-requested needs-unit-tests needs-patch


Comment:

 Thanks for the report! This ticket was discussed in the recent Media
 component meeting and we think there are two options to be explored:

 1) We omit null values from `get_available_post_mime_types()`
 2) It is typically recommended to use a blank string instead of null in
 these cases so maybe we can just set the value of a no-mime to `''` which
 should act the same as null previously

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Ticket URL: <https://core.trac.wordpress.org/ticket/59195#comment:11>
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