Ticket #11003: wp_get_object_terms-unique-results.11003.diff

wp-includes/taxonomy.php

@@ -1291 +1291 @@
                 $terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order");
         }
 
-        if ( ! $terms )
-                $terms = array();
+        if ( in_array($fields, array('ids', 'names', 'tt_ids') ) ) {
+                $terms = array_unique((array) $terms);
+        } else {
+                $_terms = array();
+                foreach( (array) $terms as $term ) {
+                        $_terms[$term->term_id] = $term;
+                }
+                $terms = $_terms;
+        }
 
         return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args);
 }