[wp-trac] [WordPress Trac] #59774: Undefined array key when using wp_list_pluck function

[WordPress Trac]

#59774: Undefined array key when using wp_list_pluck function
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 Reporter:  iamarunchaitanyajami  |       Owner:  hellofromTonya
     Type:  defect (bug)          |      Status:  reopened
 Priority:  normal                |   Milestone:  6.5
Component:  General               |     Version:  5.1
 Severity:  normal                |  Resolution:
 Keywords:  needs-patch           |     Focuses:
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Changes (by hellofromTonya):

 * keywords:  has-testing-info has-unit-tests has-patch => needs-patch


Comment:

 Replying to [comment:16 dd32]:
 > This has caused a regression for arrays of objects which have magic
 methods for getting properties.
 >
 > For example:
 > {{{
 > wp_list_pluck( [ get_user_by('ID', 1) ], 'user_email' );
 > }}}
 > returns an empty {{{array()}}} while {{{get_user_by('ID',
 1)->user_email}}} returns a string.

 You're right @dd32. Using your examples:

 {{{
 var_dump( wp_list_pluck( [ get_user_by('ID', 1) ], 'user_email' ) );
 var_dump( get_user_by('ID', 1)->user_email );
 }}}

 Results before r57698:
 {{{
 array(1) { [0]=> string(13) "test at test.com" }
 string(13) "test at test.com"
 }}}

 Results after r57698:
 {{{
 array(0) { }
 string(13) "test at test.com"
 }}}

 There may be other object handle scenarios that need consideration. I
 created [https://github.com/WordPress/wordpress-develop/pull/6180 this
 patch] to help identify those scenarios and better understand how each
 used to work (before r57698) and how they should work.

 The goal:
 * Identify all of the missing object handling scenarios.
 * Add tests for each.
 * Figure out a solution for all.

 If the above can happen before RC1, then a follow-up commit will be made.
 Else, I'd suggest reverting r57698 and moving the ticket to 6.6.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/59774#comment:21>
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