Ticket #15000: 15000.2.diff

wp-admin/includes/template.php

@@ -895 +895 @@
  *
  * @since 2.5.0
  *
- * @param string           $id            String for use in the 'id' attribute of tags.
- * @param string           $title         Title of the meta box.
- * @param callback         $callback      Function that fills the box with the desired content.
- *                                        The function should echo its output.
- * @param string|WP_Screen $screen        Optional. The screen on which to show the box (like a post
- *                                        type, 'link', or 'comment'). Default is the current screen.
- * @param string           $context       Optional. The context within the screen where the boxes
- *                                        should display. Available contexts vary from screen to
- *                                        screen. Post edit screen contexts include 'normal', 'side',
- *                                        and 'advanced'. Comments screen contexts include 'normal'
- *                                        and 'side'. Menus meta boxes (accordion sections) all use
- *                                        the 'side' context. Global default is 'advanced'.
- * @param string           $priority      Optional. The priority within the context where the boxes
- *                                        should show ('high', 'low'). Default 'default'.
- * @param array            $callback_args Optional. Data that should be set as the $args property
- *                                        of the box array (which is the second parameter passed
- *                                        to your callback). Default null.
+ * @param string                                $id             String for use in the 'id' attribute of tags.
+ * @param string                                $title          Title of the meta box.
+ * @param callback                              $callback       Function that fills the box with the desired content.
+ *                                                      The function should echo its output.
+ * @param string|WP_Screen|array        $screen         Optional. The screen on which to show the box (like a post
+ *                                                      type, 'link', or 'comment'). Default is the current screen.
+ * @param string                                $context        Optional. The context within the screen where the boxes
+ *                                                              should display. Available contexts vary from screen to
+ *                                                              screen. Post edit screen contexts include 'normal', 'side',
+ *                                                              and 'advanced'. Comments screen contexts include 'normal'
+ *                                                              and 'side'. Menus meta boxes (accordion sections) all use
+ *                                                              the 'side' context. Global default is 'advanced'.
+ * @param string                                $priority       Optional. The priority within the context where the boxes
+ *                                                      should show ('high', 'low'). Default 'default'.
+ * @param array                                 $callback_args  Optional. Data that should be set as the $args property
+ *                                                      of the box array (which is the second parameter passed
+ *                                                              to your callback). Default null.
  */
 function add_meta_box( $id, $title, $callback, $screen = null, $context = 'advanced', $priority = 'default', $callback_args = null ) {
         global $wp_meta_boxes;
 
-        if ( empty( $screen ) )
+        if ( empty( $screen ) ){
                 $screen = get_current_screen();
-        elseif ( is_string( $screen ) )
+        }elseif ( is_string( $screen ) ){
                 $screen = convert_to_screen( $screen );
+        }elseif ( is_array( $screen ) ){
+                foreach ( $screen as $single_screen ){
+                        add_meta_box( $id, $title, $callback, $single_screen, $context, $priority, $callback_args );
+                }
+        }
+
+        if( !isset( $screen->id ) ){
+                return;
+        }
 
         $page = $screen->id;