Passing an empty array into wp_get_object_terms results in an invalid query

[batmoo]

Doing something like this:

wp_get_object_terms( array(), 'category' );

...results in this:

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') ORDER BY t.name ASC' at line 1]
SELECT t.*, tt.* FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN wp_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ('category') AND tr.object_id IN () ORDER BY t.name ASC

wp_get_object_terms should catch and prevent this.

[batmoo]

Attached patch checks for empty ids and taxonomies passed in and returns an empty array.

[duck_]

In [19975]:

Stop invalid SQL syntax by bailing from wp_get_object_terms() if $object_ids or $taxonomies is empty. Props batmoo. Fixes #19952.