[wp-trac] [WordPress Trac] #54558: Notice: Undefined index in WordPress 5.9 Beta

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Sat Dec 4 17:19:02 UTC 2021

#54558: Notice: Undefined index in WordPress 5.9 Beta
 Reporter:  kafleg                           |       Owner:  audrasjb
     Type:  defect (bug)                     |      Status:  closed
 Priority:  normal                           |   Milestone:  5.9
Component:  Editor                           |     Version:  trunk
 Severity:  normal                           |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests commit  |     Focuses:

Comment (by SergeyBiryukov):

 In [changeset:"52322" 52322]:
 #!CommitTicketReference repository="" revision="52322"
 Coding Standards: Break the `$path` reference after a `foreach` loop in

 When using a `foreach` loop with a value assigned by reference, the
 variable continues to point to the last array element even after the loop,
 so it is recommended to destroy it by `unset()` to avoid unexpected
 behavior later on.

 See [https://www.php.net/manual/en/control-structures.foreach.php PHP
 Manual: foreach].

 Follow-up to [52312], [52313].

 Props TobiasBg.
 See #54558.

Ticket URL: <https://core.trac.wordpress.org/ticket/54558#comment:19>
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