Title: 2.9.0 | Page 3 of 8 | Developer.WordPress.org --- # New and updated in 2.9.0 Functions Hooks Classes Methods * function[add_theme_support()](https://developer.wordpress.org/reference/functions/add_theme_support/) * Registers theme support for a given feature. * Used by [12 functions](https://developer.wordpress.org/reference/functions/add_theme_support/#used-by) | Uses [7 functions](https://developer.wordpress.org/reference/functions/add_theme_support/#uses) | Source: [wp-includes/theme.php:2693](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L2693-L2943) * function[current_theme_supports()](https://developer.wordpress.org/reference/functions/current_theme_supports/) * Checks a theme’s support for a given feature. * Used by [83 functions](https://developer.wordpress.org/reference/functions/current_theme_supports/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/current_theme_supports/#uses) | Source: [wp-includes/theme.php:3158](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L3158-L3219) * function[require_if_theme_supports()](https://developer.wordpress.org/reference/functions/require_if_theme_supports/) * Checks a theme’s support for a given feature before loading the functions which implement it. * Used by [0 functions](https://developer.wordpress.org/reference/functions/require_if_theme_supports/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/require_if_theme_supports/#uses) | Source: [wp-includes/theme.php:3231](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L3231-L3237) * function[_preview_theme_template_filter()](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/) * Private function to modify the current template when previewing a theme * Used by [0 functions](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/#uses) | Source: [wp-includes/deprecated.php:3522](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3522-L3525) * function[_preview_theme_stylesheet_filter()](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/) * Private function to modify the current stylesheet when previewing a theme * Used by [0 functions](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/#uses) | Source: [wp-includes/deprecated.php:3536](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3536-L3539) * function[search_theme_directories()](https://developer.wordpress.org/reference/functions/search_theme_directories/) * Searches all registered theme directories for complete and valid themes. * Used by [5 functions](https://developer.wordpress.org/reference/functions/search_theme_directories/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/search_theme_directories/#uses) | Source: [wp-includes/theme.php:449](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L449-L585) * function[get_theme_roots()](https://developer.wordpress.org/reference/functions/get_theme_roots/) * Retrieves theme roots. * Used by [2 functions](https://developer.wordpress.org/reference/functions/get_theme_roots/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_theme_roots/#uses) | Source: [wp-includes/theme.php:388](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L388-L401) * function[register_theme_directory()](https://developer.wordpress.org/reference/functions/register_theme_directory/) * Registers a directory that contains themes. * Used by [0 functions](https://developer.wordpress.org/reference/functions/register_theme_directory/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/register_theme_directory/#uses) | Source: [wp-includes/theme.php:415](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/theme.php#L415-L437) * hook[override_load_textdomain](https://developer.wordpress.org/reference/hooks/override_load_textdomain/) * Filters whether to override the .mo file loading. * Used by [1 function](https://developer.wordpress.org/reference/hooks/override_load_textdomain/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/override_load_textdomain/#uses) | Source: [wp-includes/l10n.php:769](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n.php#L769-L769) * hook[load_textdomain](https://developer.wordpress.org/reference/hooks/load_textdomain/) * Fires before the MO translation file is loaded. * Used by [1 function](https://developer.wordpress.org/reference/hooks/load_textdomain/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/load_textdomain/#uses) | Source: [wp-includes/l10n.php:785](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n.php#L785-L785) * hook[load_textdomain_mofile](https://developer.wordpress.org/reference/hooks/load_textdomain_mofile/) * Filters MO file path for loading translations for a specific text domain. * Used by [1 function](https://developer.wordpress.org/reference/hooks/load_textdomain_mofile/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/load_textdomain_mofile/#uses) | Source: [wp-includes/l10n.php:795](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n.php#L795-L795) * function[load_child_theme_textdomain()](https://developer.wordpress.org/reference/functions/load_child_theme_textdomain/) * Loads the child theme’s translated strings. * Used by [0 functions](https://developer.wordpress.org/reference/functions/load_child_theme_textdomain/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/load_child_theme_textdomain/#uses) | Source: [wp-includes/l10n.php:1121](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n.php#L1121-L1126) * function[esc_html_x()](https://developer.wordpress.org/reference/functions/esc_html_x/) * Translates string with gettext context, and escapes it for safe use in HTML output. * Used by [8 functions](https://developer.wordpress.org/reference/functions/esc_html_x/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/esc_html_x/#uses) | Source: [wp-includes/l10n.php:459](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/l10n.php#L459-L461) * function[wp_strip_all_tags()](https://developer.wordpress.org/reference/functions/wp_strip_all_tags/) * Properly strips all HTML tags including ‘script’ and ‘style’. * Used by [21 functions](https://developer.wordpress.org/reference/functions/wp_strip_all_tags/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/wp_strip_all_tags/#uses) | Source: [wp-includes/formatting.php:5525](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L5525-L5561) * function[sanitize_text_field()](https://developer.wordpress.org/reference/functions/sanitize_text_field/) * Sanitizes a string from user input or from the database. * Used by [58 functions](https://developer.wordpress.org/reference/functions/sanitize_text_field/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/sanitize_text_field/#uses) | Source: [wp-includes/formatting.php:5581](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L5581-L5593) * hook[sanitize_text_field](https://developer.wordpress.org/reference/hooks/sanitize_text_field/) * Filters a sanitized text field string. * Used by [1 function](https://developer.wordpress.org/reference/hooks/sanitize_text_field/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/sanitize_text_field/#uses) | Source: [wp-includes/formatting.php:5592](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L5592-L5592) * hook[excerpt_more](https://developer.wordpress.org/reference/hooks/excerpt_more/) * Filters the string in the “more” link displayed after a trimmed excerpt. * Used by [1 function](https://developer.wordpress.org/reference/hooks/excerpt_more/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/excerpt_more/#uses) | Source: [wp-includes/formatting.php:4019](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L4019-L4019) * hook[smilies_src](https://developer.wordpress.org/reference/hooks/smilies_src/) * Filters the Smiley image URL before it’s used in the image element. * Used by [1 function](https://developer.wordpress.org/reference/hooks/smilies_src/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/smilies_src/#uses) | Source: [wp-includes/formatting.php:3465](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L3465-L3465) * function[_wptexturize_pushpop_element()](https://developer.wordpress.org/reference/functions/_wptexturize_pushpop_element/) * Searches for disabled element tags. Pushes element to stack on tag open and pops on tag close. * Used by [1 function](https://developer.wordpress.org/reference/functions/_wptexturize_pushpop_element/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/_wptexturize_pushpop_element/#uses) | Source: [wp-includes/formatting.php:391](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L391-L429) * function[shortcode_unautop()](https://developer.wordpress.org/reference/functions/shortcode_unautop/) * Don’t auto-p wrap shortcodes that stand alone. * Used by [2 functions](https://developer.wordpress.org/reference/functions/shortcode_unautop/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/shortcode_unautop/#uses) | Source: [wp-includes/formatting.php:824](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/formatting.php#L824-L869) * hook[auth_redirect_scheme](https://developer.wordpress.org/reference/hooks/auth_redirect_scheme/) * Filters the authentication redirect scheme. * Used by [1 function](https://developer.wordpress.org/reference/hooks/auth_redirect_scheme/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/auth_redirect_scheme/#uses) | Source: [wp-includes/pluggable.php:1310](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pluggable.php#L1310-L1310) * function[gd_edit_image_support()](https://developer.wordpress.org/reference/functions/gd_edit_image_support/) * Check if the installed version of GD supports particular image type * Used by [0 functions](https://developer.wordpress.org/reference/functions/gd_edit_image_support/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/gd_edit_image_support/#uses) | Source: [wp-includes/deprecated.php:3331](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3331-L3362) * function[_search_terms_tidy()](https://developer.wordpress.org/reference/functions/_search_terms_tidy/) * Formerly used internally to tidy up the search terms. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_search_terms_tidy/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_search_terms_tidy/#uses) | Source: [wp-includes/deprecated.php:3402](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3402-L3405) * function[wp_timezone_supported()](https://developer.wordpress.org/reference/functions/wp_timezone_supported/) * Check for PHP timezone support * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_timezone_supported/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_timezone_supported/#uses) | Source: [wp-includes/deprecated.php:2580](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2580-L2584) * function[wp_kses_data()](https://developer.wordpress.org/reference/functions/wp_kses_data/) * Sanitize content with allowed HTML KSES rules. * Used by [1 function](https://developer.wordpress.org/reference/functions/wp_kses_data/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/wp_kses_data/#uses) | Source: [wp-includes/kses.php:2351](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/kses.php#L2351-L2353) * function[wp_kses_post()](https://developer.wordpress.org/reference/functions/wp_kses_post/) * Sanitizes content for allowed HTML tags for post content. * Used by [12 functions](https://developer.wordpress.org/reference/functions/wp_kses_post/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_kses_post/#uses) | Source: [wp-includes/kses.php:2418](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/kses.php#L2418-L2420) * class[WP_MatchesMapRegex](https://developer.wordpress.org/reference/classes/wp_matchesmapregex/) * Helper class to remove the need to use eval to replace $matches[] in query strings. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_matchesmapregex/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_matchesmapregex/#uses) | Source: [wp-includes/class-wp-matchesmapregex.php:14](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-matchesmapregex.php#L14-L90) * hook[pre_http_request](https://developer.wordpress.org/reference/hooks/pre_http_request/) * Filters the preemptive return value of an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/pre_http_request/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/pre_http_request/#uses) | Source: [wp-includes/class-wp-http.php:277](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-http.php#L277-L277) * hook[http_response](https://developer.wordpress.org/reference/hooks/http_response/) * Filters a successful HTTP API response immediately before the response is returned. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/http_response/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_response/#uses) | Source: [wp-includes/class-wp-http.php:468](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-http.php#L468-L468) * function[_wp_timezone_choice_usort_callback()](https://developer.wordpress.org/reference/functions/_wp_timezone_choice_usort_callback/) * Sort-helper for timezones. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_wp_timezone_choice_usort_callback/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/_wp_timezone_choice_usort_callback/#uses) | Source: [wp-includes/functions.php:6612](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/functions.php#L6612-L6657) [Previous Page](https://developer.wordpress.org/reference/since/2.9.0/page/2/?output_format=md) [1](https://developer.wordpress.org/reference/since/2.9.0/?output_format=md) [2](https://developer.wordpress.org/reference/since/2.9.0/page/2/?output_format=md) 3 [4](https://developer.wordpress.org/reference/since/2.9.0/page/4/?output_format=md) [5](https://developer.wordpress.org/reference/since/2.9.0/page/5/?output_format=md)… [8](https://developer.wordpress.org/reference/since/2.9.0/page/8/?output_format=md) [Next Page](https://developer.wordpress.org/reference/since/2.9.0/page/4/?output_format=md)