Title: Classes | Page 9 of 20 | Developer.WordPress.org --- # Classes * class[UploadedFile](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uploadedfile/) * Used by [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uploadedfile/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uploadedfile/#uses) | Source: [wp-includes/php-ai-client/third-party/Nyholm/Psr7/UploadedFile.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/third-party/Nyholm/Psr7/UploadedFile.php#L15-L138) * class[Uri](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uri/) * PSR-7 URI implementation. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uri/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclientdependencies-nyholm-psr7-uri/#uses) | Source: [wp-includes/php-ai-client/third-party/Nyholm/Psr7/Uri.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/third-party/Nyholm/Psr7/Uri.php#L18-L286) * class[UserMessage](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-usermessage/) * Represents a message from a user. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-usermessage/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-usermessage/#uses) | Source: [wp-includes/php-ai-client/src/Messages/DTO/UserMessage.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Messages/DTO/UserMessage.php#L18-L31) * class[Walker](https://developer.wordpress.org/reference/classes/walker/) * A class for displaying various tree-like structures. * Used by [7 functions](https://developer.wordpress.org/reference/classes/walker/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/walker/#uses) | Source: [wp-includes/class-wp-walker.php:14](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-walker.php#L14-L456) * class[Walker_Category](https://developer.wordpress.org/reference/classes/walker_category/) * Core class used to create an HTML list of categories. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_category/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_category/#uses) | Source: [wp-includes/class-walker-category.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-category.php#L17-L278) * class[Walker_CategoryDropdown](https://developer.wordpress.org/reference/classes/walker_categorydropdown/) * Core class used to create an HTML dropdown list of Categories. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_categorydropdown/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_categorydropdown/#uses) | Source: [wp-includes/class-walker-category-dropdown.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-category-dropdown.php#L17-L87) * class[Walker_Category_Checklist](https://developer.wordpress.org/reference/classes/walker_category_checklist/) * Core walker class to output an unordered list of category checkbox input elements. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_category_checklist/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_category_checklist/#uses) | Source: [wp-admin/includes/class-walker-category-checklist.php:19](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-walker-category-checklist.php#L19-L140) * class[Walker_Comment](https://developer.wordpress.org/reference/classes/walker_comment/) * Core walker class used to create an HTML list of comments. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_comment/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_comment/#uses) | Source: [wp-includes/class-walker-comment.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-comment.php#L17-L491) * class[Walker_Nav_Menu](https://developer.wordpress.org/reference/classes/walker_nav_menu/) * Core class used to implement an HTML list of nav menu items. * Used by [2 functions](https://developer.wordpress.org/reference/classes/walker_nav_menu/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_nav_menu/#uses) | Source: [wp-includes/class-walker-nav-menu.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-nav-menu.php#L17-L366) * class[Walker_Nav_Menu_Checklist](https://developer.wordpress.org/reference/classes/walker_nav_menu_checklist/) * Create HTML list of nav menu input items. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_nav_menu_checklist/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_nav_menu_checklist/#uses) | Source: [wp-admin/includes/class-walker-nav-menu-checklist.php:16](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-walker-nav-menu-checklist.php#L16-L126) * class[Walker_Nav_Menu_Edit](https://developer.wordpress.org/reference/classes/walker_nav_menu_edit/) * Create HTML list of nav menu input items. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_nav_menu_edit/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_nav_menu_edit/#uses) | Source: [wp-admin/includes/class-walker-nav-menu-edit.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-walker-nav-menu-edit.php#L17-L350) * class[Walker_Page](https://developer.wordpress.org/reference/classes/walker_page/) * Core walker class used to create an HTML list of pages. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_page/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_page/#uses) | Source: [wp-includes/class-walker-page.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-page.php#L17-L245) * class[Walker_PageDropdown](https://developer.wordpress.org/reference/classes/walker_pagedropdown/) * Core class used to create an HTML drop-down list of pages. * Used by [0 functions](https://developer.wordpress.org/reference/classes/walker_pagedropdown/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/walker_pagedropdown/#uses) | Source: [wp-includes/class-walker-page-dropdown.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-walker-page-dropdown.php#L17-L97) * class[WebSearch](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-websearch/) * Represents web search configuration for AI models. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-websearch/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-websearch/#uses) | Source: [wp-includes/php-ai-client/src/Tools/DTO/WebSearch.php:19](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Tools/DTO/WebSearch.php#L19-L95) * class[WP](https://developer.wordpress.org/reference/classes/wp/) * WordPress environment setup class. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp/#uses) | Source: [wp-includes/class-wp.php:8](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp.php#L8-L840) * class[wpdb](https://developer.wordpress.org/reference/classes/wpdb/) * WordPress database access abstraction class. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wpdb/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wpdb/#uses) | Source: [wp-includes/class-wpdb.php:54](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wpdb.php#L54-L4146) * class[WP_Abilities_Registry](https://developer.wordpress.org/reference/classes/wp_abilities_registry/) * Manages the registration and lookup of abilities. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_abilities_registry/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_abilities_registry/#uses) | Source: [wp-includes/abilities-api/class-wp-abilities-registry.php:20](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/abilities-api/class-wp-abilities-registry.php#L20-L330) * class[WP_Ability](https://developer.wordpress.org/reference/classes/wp_ability/) * Encapsulates the properties and methods related to a specific ability in the registry. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ability/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ability/#uses) | Source: [wp-includes/abilities-api/class-wp-ability.php:21](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/abilities-api/class-wp-ability.php#L21-L692) * class[WP_Ability_Categories_Registry](https://developer.wordpress.org/reference/classes/wp_ability_categories_registry/) * Manages the registration and lookup of ability categories. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ability_categories_registry/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ability_categories_registry/#uses) | Source: [wp-includes/abilities-api/class-wp-ability-categories-registry.php:20](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/abilities-api/class-wp-ability-categories-registry.php#L20-L256) * class[WP_Ability_Category](https://developer.wordpress.org/reference/classes/wp_ability_category/) * Encapsulates the properties and methods related to a specific ability category. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ability_category/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ability_category/#uses) | Source: [wp-includes/abilities-api/class-wp-ability-category.php:21](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/abilities-api/class-wp-ability-category.php#L21-L216) * class[WP_Admin_Bar](https://developer.wordpress.org/reference/classes/wp_admin_bar/) * Core class used to implement the Toolbar API. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_admin_bar/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_admin_bar/#uses) | Source: [wp-includes/class-wp-admin-bar.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-admin-bar.php#L15-L683) * class[WP_AI_Client_Ability_Function_Resolver](https://developer.wordpress.org/reference/classes/wp_ai_client_ability_function_resolver/) * Resolves and executes WordPress Abilities API function calls from AI models. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_ability_function_resolver/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_ability_function_resolver/#uses) | Source: [wp-includes/ai-client/class-wp-ai-client-ability-function-resolver.php:25](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/class-wp-ai-client-ability-function-resolver.php#L25-L232) * class[WP_AI_Client_Cache](https://developer.wordpress.org/reference/classes/wp_ai_client_cache/) * WordPress-specific PSR-16 cache adapter for the AI Client. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_cache/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_cache/#uses) | Source: [wp-includes/ai-client/adapters/class-wp-ai-client-cache.php:22](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/adapters/class-wp-ai-client-cache.php#L22-L216) * class[WP_AI_Client_Discovery_Strategy](https://developer.wordpress.org/reference/classes/wp_ai_client_discovery_strategy/) * Discovery strategy for WordPress HTTP client. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_discovery_strategy/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_discovery_strategy/#uses) | Source: [wp-includes/ai-client/adapters/class-wp-ai-client-discovery-strategy.php:24](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/adapters/class-wp-ai-client-discovery-strategy.php#L24-L37) * class[WP_AI_Client_Event_Dispatcher](https://developer.wordpress.org/reference/classes/wp_ai_client_event_dispatcher/) * WordPress-specific PSR-14 event dispatcher for the AI Client. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_event_dispatcher/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_event_dispatcher/#uses) | Source: [wp-includes/ai-client/adapters/class-wp-ai-client-event-dispatcher.php:22](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/adapters/class-wp-ai-client-event-dispatcher.php#L22-L84) * class[WP_AI_Client_HTTP_Client](https://developer.wordpress.org/reference/classes/wp_ai_client_http_client/) * PSR-18 HTTP Client adapter using WordPress HTTP API. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_http_client/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_http_client/#uses) | Source: [wp-includes/ai-client/adapters/class-wp-ai-client-http-client.php:29](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/adapters/class-wp-ai-client-http-client.php#L29-L226) * class[WP_AI_Client_Prompt_Builder](https://developer.wordpress.org/reference/classes/wp_ai_client_prompt_builder/) * Fluent builder for constructing AI prompts, returning WP_Error on failure. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_prompt_builder/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ai_client_prompt_builder/#uses) | Source: [wp-includes/ai-client/class-wp-ai-client-prompt-builder.php:107](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ai-client/class-wp-ai-client-prompt-builder.php#L107-L487) * class[WP_Ajax_Response](https://developer.wordpress.org/reference/classes/wp_ajax_response/) * Send XML response back to Ajax request. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ajax_response/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_ajax_response/#uses) | Source: [wp-includes/class-wp-ajax-response.php:8](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-ajax-response.php#L8-L165) * class[WP_Ajax_Upgrader_Skin](https://developer.wordpress.org/reference/classes/wp_ajax_upgrader_skin/) * Upgrader Skin for Ajax WordPress upgrades. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_ajax_upgrader_skin/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_ajax_upgrader_skin/#uses) | Source: [wp-admin/includes/class-wp-ajax-upgrader-skin.php:19](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-wp-ajax-upgrader-skin.php#L19-L159) * class[WP_Application_Passwords](https://developer.wordpress.org/reference/classes/wp_application_passwords/) * Class for displaying, modifying, and sanitizing application passwords. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_application_passwords/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_application_passwords/#uses) | Source: [wp-includes/class-wp-application-passwords.php:14](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-application-passwords.php#L14-L515) [Previous Page](https://developer.wordpress.org/reference/classes/page/8/?output_format=md) [1](https://developer.wordpress.org/reference/classes/?output_format=md) … [7](https://developer.wordpress.org/reference/classes/page/7/?output_format=md) [8](https://developer.wordpress.org/reference/classes/page/8/?output_format=md) 9 [10](https://developer.wordpress.org/reference/classes/page/10/?output_format=md) [11](https://developer.wordpress.org/reference/classes/page/11/?output_format=md)… 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