Title: Classes | Page 18 of 20 | Developer.WordPress.org --- # Classes * class[WP_Site_Query](https://developer.wordpress.org/reference/classes/wp_site_query/) * Core class used for querying sites. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_site_query/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_site_query/#uses) | Source: [wp-includes/class-wp-site-query.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-site-query.php#L17-L882) * class[WP_Speculation_Rules](https://developer.wordpress.org/reference/classes/wp_speculation_rules/) * Class representing a set of speculation rules. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_speculation_rules/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_speculation_rules/#uses) | Source: [wp-includes/class-wp-speculation-rules.php:16](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-speculation-rules.php#L16-L293) * class[WP_Styles](https://developer.wordpress.org/reference/classes/wp_styles/) * Core class used to register styles. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_styles/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_styles/#uses) | Source: [wp-includes/class-wp-styles.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-styles.php#L18-L515) * class[WP_Style_Engine](https://developer.wordpress.org/reference/classes/wp_style_engine/) * The main class integrating all other WP_Style_Engine_* classes. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine/#uses) | Source: [wp-includes/style-engine/class-wp-style-engine.php:31](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/style-engine/class-wp-style-engine.php#L31-L772) * class[WP_Style_Engine_CSS_Declarations](https://developer.wordpress.org/reference/classes/wp_style_engine_css_declarations/) * Core class used for style engine CSS declarations. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_declarations/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_declarations/#uses) | Source: [wp-includes/style-engine/class-wp-style-engine-css-declarations.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/style-engine/class-wp-style-engine-css-declarations.php#L17-L192) * class[WP_Style_Engine_CSS_Rule](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rule/) * Core class used for style engine CSS rules. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rule/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rule/#uses) | Source: [wp-includes/style-engine/class-wp-style-engine-css-rule.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/style-engine/class-wp-style-engine-css-rule.php#L17-L189) * class[WP_Style_Engine_CSS_Rules_Store](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rules_store/) * Core class used as a store for WP_Style_Engine_CSS_Rule objects. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rules_store/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_css_rules_store/#uses) | Source: [wp-includes/style-engine/class-wp-style-engine-css-rules-store.php:19](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/style-engine/class-wp-style-engine-css-rules-store.php#L19-L168) * class[WP_Style_Engine_Processor](https://developer.wordpress.org/reference/classes/wp_style_engine_processor/) * Core class used to compile styles from stores or collection of CSS rules. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_processor/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_style_engine_processor/#uses) | Source: [wp-includes/style-engine/class-wp-style-engine-processor.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/style-engine/class-wp-style-engine-processor.php#L15-L181) * class[WP_Sync_Post_Meta_Storage](https://developer.wordpress.org/reference/classes/wp_sync_post_meta_storage/) * Core class that provides an interface for storing and retrieving sync updates and awareness data during a collaborative session. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_sync_post_meta_storage/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_sync_post_meta_storage/#uses) | Source: [wp-includes/collaboration/class-wp-sync-post-meta-storage.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/collaboration/class-wp-sync-post-meta-storage.php#L18-L378) * class[WP_Taxonomy](https://developer.wordpress.org/reference/classes/wp_taxonomy/) * Core class used for interacting with taxonomies. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_taxonomy/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_taxonomy/#uses) | Source: [wp-includes/class-wp-taxonomy.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-taxonomy.php#L15-L661) * class[WP_Tax_Query](https://developer.wordpress.org/reference/classes/wp_tax_query/) * Core class used to implement taxonomy queries for the Taxonomy API. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_tax_query/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_tax_query/#uses) | Source: [wp-includes/class-wp-tax-query.php:22](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-tax-query.php#L22-L659) * class[WP_Term](https://developer.wordpress.org/reference/classes/wp_term/) * Core class used to implement the WP_Term object. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_term/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_term/#uses) | Source: [wp-includes/class-wp-term.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-term.php#L17-L245) * class[WP_Terms_List_Table](https://developer.wordpress.org/reference/classes/wp_terms_list_table/) * Core class used to implement displaying terms in a list table. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_terms_list_table/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_terms_list_table/#uses) | Source: [wp-admin/includes/class-wp-terms-list-table.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-wp-terms-list-table.php#L17-L754) * class[WP_Term_Query](https://developer.wordpress.org/reference/classes/wp_term_query/) * Class used for querying terms. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_term_query/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_term_query/#uses) | Source: [wp-includes/class-wp-term-query.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-term-query.php#L18-L1180) * class[WP_Textdomain_Registry](https://developer.wordpress.org/reference/classes/wp_textdomain_registry/) * Core class used for registering text domains. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_textdomain_registry/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_textdomain_registry/#uses) | Source: [wp-includes/class-wp-textdomain-registry.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-textdomain-registry.php#L18-L359) * class[WP_Text_Diff_Renderer_inline](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_inline/) * Better word splitting than the PEAR package provides. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_inline/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_inline/#uses) | Source: [wp-includes/class-wp-text-diff-renderer-inline.php:16](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-text-diff-renderer-inline.php#L16-L33) * class[WP_Text_Diff_Renderer_Table](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_table/) * Table renderer to display the diff lines. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_table/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_text_diff_renderer_table/#uses) | Source: [wp-includes/class-wp-text-diff-renderer-table.php:21](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-text-diff-renderer-table.php#L21-L628) * class[WP_Theme](https://developer.wordpress.org/reference/classes/wp_theme/) * WP_Theme Class * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_theme/#uses) | Source: [wp-includes/class-wp-theme.php:9](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-theme.php#L9-L2166) * class[WP_Themes_List_Table](https://developer.wordpress.org/reference/classes/wp_themes_list_table/) * Core class used to implement displaying installed themes in a list table. * Used by [1 function](https://developer.wordpress.org/reference/classes/wp_themes_list_table/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_themes_list_table/#uses) | Source: [wp-admin/includes/class-wp-themes-list-table.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-wp-themes-list-table.php#L17-L363) * class[WP_Theme_Install_List_Table](https://developer.wordpress.org/reference/classes/wp_theme_install_list_table/) * Core class used to implement displaying themes to install in a list table. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_install_list_table/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_theme_install_list_table/#uses) | Source: [wp-admin/includes/class-wp-theme-install-list-table.php:17](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-wp-theme-install-list-table.php#L17-L571) * class[WP_Theme_JSON](https://developer.wordpress.org/reference/classes/wp_theme_json/) * Class that encapsulates the processing of structures that adhere to the theme. json spec. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json/#uses) | Source: [wp-includes/class-wp-theme-json.php:19](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-theme-json.php#L19-L4834) * class[WP_Theme_JSON_Data](https://developer.wordpress.org/reference/classes/wp_theme_json_data/) * Class to provide access to update a theme.json structure. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_data/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_data/#uses) | Source: [wp-includes/class-wp-theme-json-data.php:13](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-theme-json-data.php#L13-L83) * class[WP_Theme_JSON_Resolver](https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/) * Class that abstracts the processing of the different data sources for site-level config and offers an API to work with them. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/#uses) | Source: [wp-includes/class-wp-theme-json-resolver.php:20](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-theme-json-resolver.php#L20-L1017) * class[WP_Theme_JSON_Schema](https://developer.wordpress.org/reference/classes/wp_theme_json_schema/) * Class that migrates a given theme.json structure to the latest schema. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_schema/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_theme_json_schema/#uses) | Source: [wp-includes/class-wp-theme-json-schema.php:20](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-theme-json-schema.php#L20-L229) * class[WP_Token_Map](https://developer.wordpress.org/reference/classes/wp_token_map/) * WP_Token_Map class. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_token_map/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_token_map/#uses) | Source: [wp-includes/class-wp-token-map.php:146](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-token-map.php#L146-L820) * class[WP_Translations](https://developer.wordpress.org/reference/classes/wp_translations/) * Class WP_Translations. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_translations/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_translations/#uses) | Source: [wp-includes/l10n/class-wp-translations.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n/class-wp-translations.php#L18-L152) * class[WP_Translation_Controller](https://developer.wordpress.org/reference/classes/wp_translation_controller/) * Class WP_Translation_Controller. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_translation_controller/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_translation_controller/#uses) | Source: [wp-includes/l10n/class-wp-translation-controller.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n/class-wp-translation-controller.php#L15-L455) * class[WP_Translation_File](https://developer.wordpress.org/reference/classes/wp_translation_file/) * Class WP_Translation_File. * Used by [2 functions](https://developer.wordpress.org/reference/classes/wp_translation_file/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_translation_file/#uses) | Source: [wp-includes/l10n/class-wp-translation-file.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n/class-wp-translation-file.php#L15-L312) * class[WP_Translation_File_MO](https://developer.wordpress.org/reference/classes/wp_translation_file_mo/) * Class WP_Translation_File_MO. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_translation_file_mo/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_translation_file_mo/#uses) | Source: [wp-includes/l10n/class-wp-translation-file-mo.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n/class-wp-translation-file-mo.php#L15-L239) * class[WP_Translation_File_PHP](https://developer.wordpress.org/reference/classes/wp_translation_file_php/) * Class WP_Translation_File_PHP. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_translation_file_php/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/wp_translation_file_php/#uses) | Source: [wp-includes/l10n/class-wp-translation-file-php.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n/class-wp-translation-file-php.php#L15-L79) [Previous Page](https://developer.wordpress.org/reference/classes/page/17/?output_format=md) [1](https://developer.wordpress.org/reference/classes/?output_format=md) … [16](https://developer.wordpress.org/reference/classes/page/16/?output_format=md) [17](https://developer.wordpress.org/reference/classes/page/17/?output_format=md) 18 [19](https://developer.wordpress.org/reference/classes/page/19/?output_format=md) [20](https://developer.wordpress.org/reference/classes/page/20/?output_format=md) [Next Page](https://developer.wordpress.org/reference/classes/page/19/?output_format=md)