Project Type: WordPress Reference

Admin Bar Functions

Functions for managing the WordPress admin bar, defined in wp-includes/admin-bar.php. Visibility Functions show_admin_bar() Sets the display status of the admin bar globally. show_admin_bar( bool $show ): void Parameters: $show (bool)...

Admin Bar Hooks

Filters and actions for customizing the WordPress admin bar. Actions admin_bar_init Fires after WP_Admin_Bar is initialized. do_action( 'admin_bar_init' ); Location: WP_Admin_Bar::initialize() Timing: After user data populated, scripts/styles enqueued, before menus...

WP_List_Table API

WP_List_Table is the base class for displaying data in admin tables (posts, users, comments, etc.). While marked for internal use, it's widely used by plugin developers. Class Overview File: wp-admin/includes/class-wp-list-table.php...

Meta Boxes API

Meta boxes are draggable content boxes that appear on edit screens in WordPress admin. They're used for custom fields, taxonomies, and additional post/page options. Core Functions add_meta_box() Adds a meta...

Plugin & Theme Installation API

WordPress provides a comprehensive upgrader system for installing, updating, and managing plugins and themes. The core class is WP_Upgrader with specialized subclasses. Class Hierarchy WP_Upgrader (base class) ├── Plugin_Upgrader ├──...

Screen Options API

Screen Options provide user-configurable settings for admin screens, appearing in the collapsible panel at the top of admin pages. Core Functions add_screen_option() Register and configure a screen option. add_screen_option( string...

Settings API

The WordPress Settings API provides a standardized way to create and manage settings pages. It handles form generation, validation, sanitization, and storage. Core Concepts Settings - Individual options stored in...

Update Functions API

WordPress provides APIs for checking, managing, and applying updates to core, plugins, themes, and translations. Checking for Updates Core Updates // Get available core updates $updates = get_core_updates(); if (...

Admin Bar API Overview

The Admin Bar (also called Toolbar) API provides a way to add, modify, and remove items from the WordPress admin bar that appears at the top of both front-end and...

Admin Functions (admin.php)

wp-admin/includes/admin.php is the core loader for WordPress admin APIs. It does not define many public functions itself; instead it loads the admin-only APIs that developers use in the dashboard. This...

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