The key is the name of a WP global variable, the value is irrelevant. */ private static $wp_globals = array( '_links_add_base' => true, '_links_add_target' => true, '_menu_item_sort_prop' => true, '_nav_menu_placeholder' => true, '_new_bundled_files' => true, '_old_files' => true, '_parent_pages' => true, '_registered_pages' => true, '_updated_user_settings' => true, '_wp_additional_image_sizes' => true, '_wp_admin_css_colors' => true, '_wp_default_headers' => true, '_wp_deprecated_widgets_callbacks' => true, '_wp_last_object_menu' => true, '_wp_last_utility_menu' => true, '_wp_menu_nopriv' => true, '_wp_nav_menu_max_depth' => true, '_wp_post_type_features' => true, '_wp_real_parent_file' => true, '_wp_registered_nav_menus' => true, '_wp_sidebars_widgets' => true, '_wp_submenu_nopriv' => true, '_wp_suspend_cache_invalidation' => true, '_wp_theme_features' => true, '_wp_using_ext_object_cache' => true, 'action' => true, 'active_signup' => true, 'admin_body_class' => true, 'admin_page_hooks' => true, 'all_links' => true, 'allowedentitynames' => true, 'allowedposttags' => true, 'allowedtags' => true, 'auth_secure_cookie' => true, 'authordata' => true, 'avail_post_mime_types' => true, 'avail_post_stati' => true, 'blog_id' => true, 'blog_title' => true, 'blogname' => true, 'cat' => true, 'cat_id' => true, 'charset_collate' => true, 'comment' => true, 'comment_alt' => true, 'comment_depth' => true, 'comment_status' => true, 'comment_thread_alt' => true, 'comment_type' => true, 'comments' => true, 'compress_css' => true, 'compress_scripts' => true, 'concatenate_scripts' => true, 'content_width' => true, 'current_blog' => true, 'current_screen' => true, 'current_site' => true, 'current_user' => true, 'currentcat' => true, 'currentday' => true, 'currentmonth' => true, 'custom_background' => true, 'custom_image_header' => true, 'default_menu_order' => true, 'descriptions' => true, 'domain' => true, 'editor_styles' => true, 'error' => true, 'errors' => true, 'EZSQL_ERROR' => true, 'feeds' => true, 'GETID3_ERRORARRAY' => true, 'hook_suffix' => true, 'HTTP_RAW_POST_DATA' => true, 'id' => true, 'in_comment_loop' => true, 'interim_login' => true, 'is_apache' => true, 'is_chrome' => true, 'is_gecko' => true, 'is_IE' => true, 'is_IIS' => true, 'is_iis7' => true, 'is_macIE' => true, 'is_NS4' => true, 'is_opera' => true, 'is_safari' => true, 'is_winIE' => true, 'l10n' => true, 'link' => true, 'link_id' => true, 'locale' => true, 'locked_post_status' => true, 'lost' => true, 'm' => true, 'map' => true, 'menu' => true, 'menu_order' => true, 'merged_filters' => true, 'mode' => true, 'monthnum' => true, 'more' => true, 'mu_plugin' => true, 'multipage' => true, 'names' => true, 'nav_menu_selected_id' => true, 'network_plugin' => true, 'new_whitelist_options' => true, 'numpages' => true, 'one_theme_location_no_menus' => true, 'opml' => true, 'order' => true, 'orderby' => true, 'overridden_cpage' => true, 'page' => true, 'paged' => true, 'pagenow' => true, 'pages' => true, 'parent_file' => true, 'pass_allowed_html' => true, 'pass_allowed_protocols' => true, 'path' => true, 'per_page' => true, 'PHP_SELF' => true, 'phpmailer' => true, 'plugin_page' => true, 'plugin' => true, 'plugins' => true, 'post' => true, 'post_default_category' => true, 'post_default_title' => true, 'post_ID' => true, 'post_id' => true, 'post_mime_types' => true, 'post_type' => true, 'post_type_object' => true, 'posts' => true, 'preview' => true, 'previouscat' => true, 'previousday' => true, 'previousweekday' => true, 'redir_tab' => true, 'required_mysql_version' => true, 'required_php_version' => true, 'rnd_value' => true, 'role' => true, 's' => true, 'search' => true, 'self' => true, 'shortcode_tags' => true, 'show_admin_bar' => true, 'sidebars_widgets' => true, 'status' => true, 'submenu' => true, 'submenu_file' => true, 'super_admins' => true, 'tab' => true, 'table_prefix' => true, 'tabs' => true, 'tag' => true, 'tag_ID' => true, 'targets' => true, 'tax' => true, 'taxnow' => true, 'taxonomy' => true, 'term' => true, 'text_direction' => true, 'theme_field_defaults' => true, 'themes_allowedtags' => true, 'timeend' => true, 'timestart' => true, 'tinymce_version' => true, 'title' => true, 'totals' => true, 'type' => true, 'typenow' => true, 'updated_timestamp' => true, 'upgrading' => true, 'urls' => true, 'user_email' => true, 'user_ID' => true, 'user_identity' => true, 'user_level' => true, 'user_login' => true, 'user_url' => true, 'userdata' => true, 'usersearch' => true, 'whitelist_options' => true, 'withcomments' => true, 'wp' => true, 'wp_actions' => true, 'wp_admin_bar' => true, 'wp_cockneyreplace' => true, 'wp_current_db_version' => true, 'wp_current_filter' => true, 'wp_customize' => true, 'wp_dashboard_control_callbacks' => true, 'wp_db_version' => true, 'wp_did_header' => true, 'wp_embed' => true, 'wp_file_descriptions' => true, 'wp_filesystem' => true, 'wp_filter' => true, 'wp_hasher' => true, 'wp_header_to_desc' => true, 'wp_importers' => true, 'wp_json' => true, 'wp_list_table' => true, 'wp_local_package' => true, 'wp_locale' => true, 'wp_meta_boxes' => true, 'wp_object_cache' => true, 'wp_plugin_paths' => true, 'wp_post_statuses' => true, 'wp_post_types' => true, 'wp_queries' => true, 'wp_query' => true, 'wp_registered_sidebars' => true, 'wp_registered_widget_controls' => true, 'wp_registered_widget_updates' => true, 'wp_registered_widgets' => true, 'wp_rewrite' => true, 'wp_rich_edit' => true, 'wp_rich_edit_exists' => true, 'wp_roles' => true, 'wp_scripts' => true, 'wp_settings_errors' => true, 'wp_settings_fields' => true, 'wp_settings_sections' => true, 'wp_smiliessearch' => true, 'wp_styles' => true, 'wp_taxonomies' => true, 'wp_the_query' => true, 'wp_theme_directories' => true, 'wp_themes' => true, 'wp_user_roles' => true, 'wp_version' => true, 'wp_widget_factory' => true, 'wp_xmlrpc_server' => true, 'wpcommentsjavascript' => true, 'wpcommentspopupfile' => true, 'wpdb' => true, 'wpsmiliestrans' => true, 'year' => true, ); /** * Retrieve a list with the names of global WP variables. * * @since 3.0.0 * * @return array Array with the variables names as keys. The value is irrelevant. */ public static function get_names() { return self::$wp_globals; } /** * Verify if a given variable name is the name of a WP global variable. * * @since 3.0.0 * * @param string $name The full variable name with or without leading dollar sign. * This allows for passing an array key variable name, such as * `'_GET'` retrieved from `$GLOBALS['_GET']`. * > Note: when passing an array key, string quotes are expected * to have been stripped already. * * @return bool */ public static function is_wp_global( $name ) { if ( strpos( $name, '$' ) === 0 ) { $name = substr( $name, 1 ); } return isset( self::$wp_globals[ $name ] ); } }