Make WordPress Core


Ignore:
Timestamp:
03/30/2026 05:31:56 AM (4 months ago)
Author:
westonruter
Message:

Code Quality: Replace void with proper return types in union PHPDoc annotations.

In PHP's type system, void means a function does not return a value and cannot be part of a union type. Many functions in core were documented as returning e.g. string|void while actually returning null implicitly via bare return; statements. This replaces void with null in union return types, adds explicit return null; statements, and updates @return annotations across 22 files in wp-includes.

Additionally:

  • Adds @return never for WP_Recovery_Mode::redirect_protected().
  • Fixes WP_Theme_JSON::set_spacing_sizes() to use @return void instead of @return null|void.
  • Removes void from return types where the function always returns a value or dies: remove_theme_support(), WP_Recovery_Mode::handle_error().
  • Fixes wp_die() return type from never|void to void with clarified description.
  • Initializes $primary variable in get_active_blog_for_user() to prevent a possible undefined variable notice.

Developed in https://github.com/WordPress/wordpress-develop/pull/11012

Follow-up to r62177, r61766, r61719.

Props apermo, xateman, westonruter, parthvataliya, nimeshatxecurify.
See #64704.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/src/wp-includes/class-wp-xmlrpc-server.php

    r62167 r62178  
    354354         *
    355355         * @param string|array $data Escape single string or array of strings.
    356          * @return string|void Returns with string is passed, alters by-reference
     356         * @return string|null Returns with string if passed, alters by-reference
    357357         *                     when array is passed.
    358358         */
     
    369369                        }
    370370                }
     371                return null;
    371372        }
    372373
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