Ticket #28666: 28666.diff

wp-includes/functions.php

@@ -2875 +2875 @@
  *
  * @param array $list A list of objects or arrays
  * @param int|string $field A field from the object to place instead of the entire object
+ * @param int|string $index_key A field from the object to use as keys for the new array
  * @return array
  */
-function wp_list_pluck( $list, $field ) {
+function wp_list_pluck( $list, $field, $index_key = null ) {
+        if ( $index_key ) {
+                $newlist = array();
+        } else {
+                $newlist = $list;
+        }
+
         foreach ( $list as $key => $value ) {
-                if ( is_object( $value ) )
-                        $list[ $key ] = $value->$field;
-                else
-                        $list[ $key ] = $value[ $field ];
+                if ( $index_key ) {
+                        if ( is_object( $value ) ) {
+                                $newkey = isset( $value->$index_key ) ? $value->$index_key : $key;
+                        } else {
+                                $newkey = isset( $value[ $index_key ] ) ? $value->$index_key : $key;
+                        }
+                } else {
+                        $newkey = $key;
+                }
+                if ( is_object( $value ) ) {
+                        $newlist[ $newkey ] = $value->$field;
+                } else {
+                        $newlist[ $newkey ] = $value[ $field ];
+                }
         }
 
-        return $list;
+        return $newlist;
 }
 
 /**