Title: Hooks | Page 29 of 49 | Developer.WordPress.org --- # Hooks * hook[hooked_block_types](https://developer.wordpress.org/reference/hooks/hooked_block_types/) * Filters the list of hooked block types for a given anchor block type and relative position. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/hooked_block_types/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/hooked_block_types/#uses) | Source: [wp-includes/blocks.php:967](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/blocks.php#L967-L967) * hook[hooked_block_{$hooked_block_type}](https://developer.wordpress.org/reference/hooks/hooked_block_hooked_block_type/) * Filters the parsed block array for a given hooked block. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/hooked_block_hooked_block_type/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/hooked_block_hooked_block_type/#uses) | Source: [wp-includes/blocks.php:1006](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/blocks.php#L1006-L1006) * hook[htmledit_pre](https://developer.wordpress.org/reference/hooks/htmledit_pre/) * Filters the text before it is formatted for the HTML editor. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/htmledit_pre/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/htmledit_pre/#uses) | Source: [wp-includes/deprecated.php:3638](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/deprecated.php#L3638-L3638) * hook[https_local_ssl_verify](https://developer.wordpress.org/reference/hooks/https_local_ssl_verify/) * Filters whether SSL should be verified for local HTTP API requests. * Used by [8 functions](https://developer.wordpress.org/reference/hooks/https_local_ssl_verify/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/https_local_ssl_verify/#uses) | Source: [wp-includes/class-wp-http-streams.php:113](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http-streams.php#L113-L113) * hook[https_ssl_verify](https://developer.wordpress.org/reference/hooks/https_ssl_verify/) * Filters whether SSL should be verified for non-local requests. * Used by [3 functions](https://developer.wordpress.org/reference/hooks/https_ssl_verify/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/https_ssl_verify/#uses) | Source: [wp-includes/class-wp-http.php:397](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L397-L397) * hook[http_allowed_safe_ports](https://developer.wordpress.org/reference/hooks/http_allowed_safe_ports/) * Controls the list of ports considered safe in HTTP API. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_allowed_safe_ports/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_allowed_safe_ports/#uses) | Source: [wp-includes/http.php:643](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/http.php#L643-L643) * hook[http_api_curl](https://developer.wordpress.org/reference/hooks/http_api_curl/) * Fires before the cURL request is executed. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/http_api_curl/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_api_curl/#uses) | Source: [wp-includes/class-wp-http-curl.php:236](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http-curl.php#L236-L236) * hook[http_api_debug](https://developer.wordpress.org/reference/hooks/http_api_debug/) * Fires after an HTTP API response is received and before the response is returned. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/http_api_debug/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_api_debug/#uses) | Source: [wp-includes/class-wp-http.php:440](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L440-L440) * hook[http_api_transports](https://developer.wordpress.org/reference/hooks/http_api_transports/) * Filters which HTTP transports are available and in what order. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_api_transports/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_api_transports/#uses) | Source: [wp-includes/class-wp-http.php:560](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L560-L560) * hook[http_headers_useragent](https://developer.wordpress.org/reference/hooks/http_headers_useragent/) * Filters the user agent value sent with an HTTP request. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/http_headers_useragent/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_headers_useragent/#uses) | Source: [wp-includes/class-wp-http.php:211](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L211-L211) * hook[http_origin](https://developer.wordpress.org/reference/hooks/http_origin/) * Changes the origin of an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_origin/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_origin/#uses) | Source: [wp-includes/http.php:442](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/http.php#L442-L442) * hook[http_request_args](https://developer.wordpress.org/reference/hooks/http_request_args/) * Filters the arguments used in an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_args/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_args/#uses) | Source: [wp-includes/class-wp-http.php:252](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L252-L252) * hook[http_request_host_is_external](https://developer.wordpress.org/reference/hooks/http_request_host_is_external/) * Checks if HTTP request is external or not. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_host_is_external/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_host_is_external/#uses) | Source: [wp-includes/http.php:618](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/http.php#L618-L618) * hook[http_request_redirection_count](https://developer.wordpress.org/reference/hooks/http_request_redirection_count/) * Filters the number of redirects allowed during an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_redirection_count/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_redirection_count/#uses) | Source: [wp-includes/class-wp-http.php:191](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L191-L191) * hook[http_request_reject_unsafe_urls](https://developer.wordpress.org/reference/hooks/http_request_reject_unsafe_urls/) * Filters whether to pass URLs through wp_http_validate_url() in an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_reject_unsafe_urls/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_reject_unsafe_urls/#uses) | Source: [wp-includes/class-wp-http.php:221](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L221-L221) * hook[http_request_timeout](https://developer.wordpress.org/reference/hooks/http_request_timeout/) * Filters the timeout value for an HTTP request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_timeout/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_timeout/#uses) | Source: [wp-includes/class-wp-http.php:181](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L181-L181) * hook[http_request_version](https://developer.wordpress.org/reference/hooks/http_request_version/) * Filters the version of the HTTP protocol used in a request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/http_request_version/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/http_request_version/#uses) | Source: [wp-includes/class-wp-http.php:201](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L201-L201) * 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:467](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-http.php#L467-L467) * hook[human_time_diff](https://developer.wordpress.org/reference/hooks/human_time_diff/) * Filters the human-readable difference between two timestamps. * Used by [1 function](https://developer.wordpress.org/reference/hooks/human_time_diff/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/human_time_diff/#uses) | Source: [wp-includes/formatting.php:3948](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/formatting.php#L3948-L3948) * hook[icon_dir](https://developer.wordpress.org/reference/hooks/icon_dir/) * Filters the icon directory path. * Used by [3 functions](https://developer.wordpress.org/reference/hooks/icon_dir/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/icon_dir/#uses) | Source: [wp-includes/post.php:7229](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/post.php#L7229-L7229) * hook[icon_dirs](https://developer.wordpress.org/reference/hooks/icon_dirs/) * Filters the array of icon directory URIs. * Used by [1 function](https://developer.wordpress.org/reference/hooks/icon_dirs/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/icon_dirs/#uses) | Source: [wp-includes/post.php:7247](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/post.php#L7247-L7247) * hook[icon_dir_uri](https://developer.wordpress.org/reference/hooks/icon_dir_uri/) * Filters the icon directory URI. * Used by [1 function](https://developer.wordpress.org/reference/hooks/icon_dir_uri/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/icon_dir_uri/#uses) | Source: [wp-includes/post.php:7238](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/post.php#L7238-L7238) * hook[iis7_supports_permalinks](https://developer.wordpress.org/reference/hooks/iis7_supports_permalinks/) * Filters whether IIS 7+ supports pretty permalinks. * Used by [1 function](https://developer.wordpress.org/reference/hooks/iis7_supports_permalinks/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/iis7_supports_permalinks/#uses) | Source: [wp-includes/functions.php:6225](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/functions.php#L6225-L6225) * hook[iis7_url_rewrite_rules](https://developer.wordpress.org/reference/hooks/iis7_url_rewrite_rules/) * Filters the list of rewrite rules formatted for output to a web.config. * Used by [1 function](https://developer.wordpress.org/reference/hooks/iis7_url_rewrite_rules/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/iis7_url_rewrite_rules/#uses) | Source: [wp-includes/class-wp-rewrite.php:1667](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-rewrite.php#L1667-L1667) * hook[illegal_user_logins](https://developer.wordpress.org/reference/hooks/illegal_user_logins/) * Filters the list of disallowed usernames. * Used by [5 functions](https://developer.wordpress.org/reference/hooks/illegal_user_logins/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/illegal_user_logins/#uses) | Source: [wp-includes/user.php:2281](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/user.php#L2281-L2281) * hook[image_add_caption_shortcode](https://developer.wordpress.org/reference/hooks/image_add_caption_shortcode/) * Filters the image HTML markup including the caption shortcode. * Used by [1 function](https://developer.wordpress.org/reference/hooks/image_add_caption_shortcode/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/image_add_caption_shortcode/#uses) | Source: [wp-admin/includes/media.php:249](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/media.php#L249-L249) * hook[image_add_caption_text](https://developer.wordpress.org/reference/hooks/image_add_caption_text/) * Filters the caption text. * Used by [1 function](https://developer.wordpress.org/reference/hooks/image_add_caption_text/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/image_add_caption_text/#uses) | Source: [wp-admin/includes/media.php:204](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/media.php#L204-L204) * hook[image_downsize](https://developer.wordpress.org/reference/hooks/image_downsize/) * Filters whether to preempt the output of image_downsize(). * Used by [2 functions](https://developer.wordpress.org/reference/hooks/image_downsize/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/image_downsize/#uses) | Source: [wp-includes/media.php:212](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/media.php#L212-L212) * hook[image_editor_default_mime_type](https://developer.wordpress.org/reference/hooks/image_editor_default_mime_type/) * Filters default mime type prior to getting the file extension. * Used by [1 function](https://developer.wordpress.org/reference/hooks/image_editor_default_mime_type/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/image_editor_default_mime_type/#uses) | Source: [wp-includes/class-wp-image-editor.php:393](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-image-editor.php#L393-L393) * hook[image_editor_output_format](https://developer.wordpress.org/reference/hooks/image_editor_output_format/) * Filters the image editor output format mapping. * Used by [1 function](https://developer.wordpress.org/reference/hooks/image_editor_output_format/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/image_editor_output_format/#uses) | Source: [wp-includes/media.php:6366](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/media.php#L6366-L6366) [Previous Page](https://developer.wordpress.org/reference/hooks/page/28/?output_format=md) [1](https://developer.wordpress.org/reference/hooks/?output_format=md) … 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