Ticket #35058: Remove_for_loop_iteration__by_reference__to_avoid_fatal_php_error.patch

src/wp-includes/formatting.php

@@ -3881 +3881 @@
  */
 function map_deep( $value, $callback ) {
         if ( is_array( $value ) || is_object( $value ) ) {
-                foreach ( $value as &$item ) {
-                        $item = map_deep( $item, $callback );
+                foreach ( $value as $index => $item ) {
+                        $value[$index] = map_deep( $item, $callback );
                 }
                 return $value;
         } else {