[wp-trac] [WordPress Trac] #34723: Warning in get_the_terms() because of non-array

WordPress Trac noreply at wordpress.org
Wed Dec 9 20:25:53 UTC 2015

#34723: Warning in get_the_terms() because of non-array
 Reporter:  mrppp                     |       Owner:
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  Awaiting Review
Component:  Taxonomy                  |     Version:  4.4
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
Changes (by stephenharris):

 * keywords:   => has-patch has-unit-tests
 * version:   => 4.4


 I believe this is a bug in WordPress, specifically in `get_the_terms()`.
 See this line:
 /wp-includes/category-template.php#L1158 and the `foreach` loop a few
 lines above it - both assume that `$terms` is an array, but
 `wp_get_object_terms()` will return a `WP_Error` when the taxonomy doesn't

 In 4.3.1 `get_the_terms()` could be used with a non-registered taxonomy
 without any issues (it would return a `WP_Error()`). Currently `array_map`
 on `WP_Error` object would give the reported error.

 Looks like this issues was introduced in [35032]

Ticket URL: <https://core.trac.wordpress.org/ticket/34723#comment:3>
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