Title: Hooks | Page 22 of 49 | Developer.WordPress.org --- # Hooks * hook[esc_textarea](https://developer.wordpress.org/reference/hooks/esc_textarea/) * Filters a string cleaned and escaped for output in a textarea element. * Used by [1 function](https://developer.wordpress.org/reference/hooks/esc_textarea/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/esc_textarea/#uses) | Source: [wp-includes/formatting.php:4749](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/formatting.php#L4749-L4749) * hook[esc_xml](https://developer.wordpress.org/reference/hooks/esc_xml/) * Filters a string cleaned and escaped for output in XML. * Used by [1 function](https://developer.wordpress.org/reference/hooks/esc_xml/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/esc_xml/#uses) | Source: [wp-includes/formatting.php:4806](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/formatting.php#L4806-L4806) * hook[excerpt_allowed_blocks](https://developer.wordpress.org/reference/hooks/excerpt_allowed_blocks/) * Filters the list of blocks that can contribute to the excerpt. * Used by [1 function](https://developer.wordpress.org/reference/hooks/excerpt_allowed_blocks/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/excerpt_allowed_blocks/#uses) | Source: [wp-includes/blocks.php:2181](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/blocks.php#L2181-L2181) * hook[excerpt_allowed_wrapper_blocks](https://developer.wordpress.org/reference/hooks/excerpt_allowed_wrapper_blocks/) * Filters the list of blocks that can be used as wrapper blocks, allowing excerpts to be generated from the `innerBlocks` of these wrappers. * Used by [1 function](https://developer.wordpress.org/reference/hooks/excerpt_allowed_wrapper_blocks/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/excerpt_allowed_wrapper_blocks/#uses) | Source: [wp-includes/blocks.php:2167](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/blocks.php#L2167-L2167) * hook[excerpt_length](https://developer.wordpress.org/reference/hooks/excerpt_length/) * Filters the maximum number of words in a post excerpt. * Used by [1 function](https://developer.wordpress.org/reference/hooks/excerpt_length/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/excerpt_length/#uses) | Source: [wp-includes/formatting.php:4019](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/formatting.php#L4019-L4019) * 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:4028](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/formatting.php#L4028-L4028) * hook[exit_on_http_head](https://developer.wordpress.org/reference/hooks/exit_on_http_head/) * Filters whether to allow ‘HEAD’ requests to generate content. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/exit_on_http_head/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/exit_on_http_head/#uses) | Source: [wp-includes/template-loader.php:36](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/template-loader.php#L36-L36) * hook[expiration_of_site_transient_{$transient}](https://developer.wordpress.org/reference/hooks/expiration_of_site_transient_transient/) * Filters the expiration for a site transient before its value is set. * Used by [1 function](https://developer.wordpress.org/reference/hooks/expiration_of_site_transient_transient/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/expiration_of_site_transient_transient/#uses) | Source: [wp-includes/option.php:2669](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/option.php#L2669-L2669) * hook[expiration_of_transient_{$transient}](https://developer.wordpress.org/reference/hooks/expiration_of_transient_transient/) * Filters the expiration for a transient before its value is set. * Used by [1 function](https://developer.wordpress.org/reference/hooks/expiration_of_transient_transient/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/expiration_of_transient_transient/#uses) | Source: [wp-includes/option.php:1539](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/option.php#L1539-L1539) * hook[export_args](https://developer.wordpress.org/reference/hooks/export_args/) * Filters the export args. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/export_args/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/export_args/#uses) | Source: [wp-admin/export.php:121](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/export.php#L121-L121) * hook[export_filters](https://developer.wordpress.org/reference/hooks/export_filters/) * Fires at the end of the export filters form. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/export_filters/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/export_filters/#uses) | Source: [wp-admin/export.php:342](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/export.php#L342-L342) * hook[export_wp](https://developer.wordpress.org/reference/hooks/export_wp/) * Fires at the beginning of an export, before any headers are sent. * Used by [1 function](https://developer.wordpress.org/reference/hooks/export_wp/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/export_wp/#uses) | Source: [wp-admin/includes/export.php:77](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/export.php#L77-L77) * hook[export_wp_filename](https://developer.wordpress.org/reference/hooks/export_wp_filename/) * Filters the export filename. * Used by [1 function](https://developer.wordpress.org/reference/hooks/export_wp_filename/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/export_wp_filename/#uses) | Source: [wp-admin/includes/export.php:94](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/export.php#L94-L94) * hook[ext2type](https://developer.wordpress.org/reference/hooks/ext2type/) * Filters file type based on the extension name. * Used by [1 function](https://developer.wordpress.org/reference/hooks/ext2type/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/ext2type/#uses) | Source: [wp-includes/functions.php:3585](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/functions.php#L3585-L3598) * hook[extra_theme_headers](https://developer.wordpress.org/reference/hooks/extra_theme_headers/) * Used by [0 functions](https://developer.wordpress.org/reference/hooks/extra_theme_headers/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/extra_theme_headers/#uses) | Source: [wp-includes/deprecated.php:3117](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/deprecated.php#L3117-L3117) * hook[extra_{$context}_headers](https://developer.wordpress.org/reference/hooks/extra_context_headers/) * Filters extra file headers by context. * Used by [1 function](https://developer.wordpress.org/reference/hooks/extra_context_headers/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/extra_context_headers/#uses) | Source: [wp-includes/functions.php:6929](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/functions.php#L6929-L6929) * hook[fallback_intermediate_image_sizes](https://developer.wordpress.org/reference/hooks/fallback_intermediate_image_sizes/) * Filters the image sizes generated for non-image mime types. * Used by [1 function](https://developer.wordpress.org/reference/hooks/fallback_intermediate_image_sizes/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/fallback_intermediate_image_sizes/#uses) | Source: [wp-admin/includes/image.php:686](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/image.php#L686-L686) * hook[feed_content_type](https://developer.wordpress.org/reference/hooks/feed_content_type/) * Filters the content type for a specific feed type. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_content_type/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_content_type/#uses) | Source: [wp-includes/feed.php:791](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/feed.php#L791-L791) * hook[feed_link](https://developer.wordpress.org/reference/hooks/feed_link/) * Filters the feed type permalink. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_link/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_link/#uses) | Source: [wp-includes/link-template.php:732](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/link-template.php#L732-L732) * hook[feed_links_args](https://developer.wordpress.org/reference/hooks/feed_links_args/) * Filters the feed links arguments. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_args/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_args/#uses) | Source: [wp-includes/general-template.php:3262](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3262-L3262) * hook[feed_links_extra_args](https://developer.wordpress.org/reference/hooks/feed_links_extra_args/) * Filters the extra feed links arguments. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_args/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_args/#uses) | Source: [wp-includes/general-template.php:3333](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3333-L3333) * hook[feed_links_extra_show_author_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_author_feed/) * Filters whether to display the author feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_author_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_author_feed/#uses) | Source: [wp-includes/general-template.php:3491](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3491-L3491) * hook[feed_links_extra_show_category_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_category_feed/) * Filters whether to display the category feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_category_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_category_feed/#uses) | Source: [wp-includes/general-template.php:3416](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3416-L3416) * hook[feed_links_extra_show_post_comments_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_comments_feed/) * Filters whether to display the post comments feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_comments_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_comments_feed/#uses) | Source: [wp-includes/general-template.php:3359](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3359-L3359) * hook[feed_links_extra_show_post_type_archive_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_type_archive_feed/) * Filters whether to display the post type archive feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_type_archive_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_post_type_archive_feed/#uses) | Source: [wp-includes/general-template.php:3388](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3388-L3388) * hook[feed_links_extra_show_search_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_search_feed/) * Filters whether to display the search results feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_search_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_search_feed/#uses) | Source: [wp-includes/general-template.php:3513](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3513-L3513) * hook[feed_links_extra_show_tag_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tag_feed/) * Filters whether to display the tag feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tag_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tag_feed/#uses) | Source: [wp-includes/general-template.php:3440](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3440-L3440) * hook[feed_links_extra_show_tax_feed](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tax_feed/) * Filters whether to display the custom taxonomy feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tax_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_extra_show_tax_feed/#uses) | Source: [wp-includes/general-template.php:3464](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3464-L3464) * hook[feed_links_show_comments_feed](https://developer.wordpress.org/reference/hooks/feed_links_show_comments_feed/) * Filters whether to display the comments feed link. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/feed_links_show_comments_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_show_comments_feed/#uses) | Source: [wp-includes/general-template.php:3287](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/general-template.php#L3287-L3287) * hook[feed_links_show_posts_feed](https://developer.wordpress.org/reference/hooks/feed_links_show_posts_feed/) * Filters whether to display the posts feed link. * Used by [1 function](https://developer.wordpress.org/reference/hooks/feed_links_show_posts_feed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/feed_links_show_posts_feed/#uses) | Source: 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