Title: 5.0.0 | Page 5 of 6 | Developer.WordPress.org --- # New and updated in 5.0.0 Functions Hooks Classes Methods * hook[block_parser_class](https://developer.wordpress.org/reference/hooks/block_parser_class/) * Filter to allow plugins to replace the server-side block parser. * Used by [1 function](https://developer.wordpress.org/reference/hooks/block_parser_class/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/block_parser_class/#uses) | Source: [wp-includes/blocks.php:2558](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2558-L2558) * function[do_blocks()](https://developer.wordpress.org/reference/functions/do_blocks/) * Parses dynamic blocks out of `post_content` and re-renders them. * Used by [3 functions](https://developer.wordpress.org/reference/functions/do_blocks/#used-by) | Uses [7 functions](https://developer.wordpress.org/reference/functions/do_blocks/#uses) | Source: [wp-includes/blocks.php:2572](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2572-L2609) * function[_restore_wpautop_hook()](https://developer.wordpress.org/reference/functions/_restore_wpautop_hook/) * If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards, for subsequent `the_content` usage. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_restore_wpautop_hook/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/_restore_wpautop_hook/#uses) | Source: [wp-includes/blocks.php:2621](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2621-L2628) * function[has_blocks()](https://developer.wordpress.org/reference/functions/has_blocks/) * Determines whether a post or content string has blocks. * Used by [6 functions](https://developer.wordpress.org/reference/functions/has_blocks/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/has_blocks/#uses) | Source: [wp-includes/blocks.php:878](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L878-L890) * function[has_block()](https://developer.wordpress.org/reference/functions/has_block/) * Determines whether a $post or a string contains a specific block type. * Used by [3 functions](https://developer.wordpress.org/reference/functions/has_block/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/has_block/#uses) | Source: [wp-includes/blocks.php:909](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L909-L945) * function[get_dynamic_block_names()](https://developer.wordpress.org/reference/functions/get_dynamic_block_names/) * Returns an array of the names of all registered dynamic block types. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_dynamic_block_names/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/get_dynamic_block_names/#uses) | Source: [wp-includes/blocks.php:954](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L954-L965) * function[excerpt_remove_blocks()](https://developer.wordpress.org/reference/functions/excerpt_remove_blocks/) * Parses blocks out of a content string, and renders those appropriate for the excerpt. * Used by [1 function](https://developer.wordpress.org/reference/functions/excerpt_remove_blocks/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/excerpt_remove_blocks/#uses) | Source: [wp-includes/blocks.php:2247](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2247-L2332) * 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:2296](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2296-L2296) * function[render_block()](https://developer.wordpress.org/reference/functions/render_block/) * Renders a single block into a HTML string. * Used by [4 functions](https://developer.wordpress.org/reference/functions/render_block/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/render_block/#uses) | Source: [wp-includes/blocks.php:2412](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L2412-L2515) * function[register_block_type()](https://developer.wordpress.org/reference/functions/register_block_type/) * Registers a block type. The recommended way is to register a block type using the metadata stored in the `block.json` file. * Used by [0 functions](https://developer.wordpress.org/reference/functions/register_block_type/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/register_block_type/#uses) | Source: [wp-includes/blocks.php:842](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L842-L848) * function[unregister_block_type()](https://developer.wordpress.org/reference/functions/unregister_block_type/) * Unregisters a block type. * Used by [0 functions](https://developer.wordpress.org/reference/functions/unregister_block_type/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/unregister_block_type/#uses) | Source: [wp-includes/blocks.php:859](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/blocks.php#L859-L861) * hook[block_editor_preload_paths](https://developer.wordpress.org/reference/hooks/block_editor_preload_paths/) * Filters the array of paths that will be preloaded. * Used by [1 function](https://developer.wordpress.org/reference/hooks/block_editor_preload_paths/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/block_editor_preload_paths/#uses) | Source: [wp-includes/block-editor.php:707](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/block-editor.php#L707-L707) * hook[allowed_block_types](https://developer.wordpress.org/reference/hooks/allowed_block_types/) * Filters the allowed block types for the editor. * Used by [1 function](https://developer.wordpress.org/reference/hooks/allowed_block_types/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/allowed_block_types/#uses) | Source: [wp-includes/block-editor.php:142](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/block-editor.php#L142-L142) * hook[write_your_story](https://developer.wordpress.org/reference/hooks/write_your_story/) * Filters the body placeholder text. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/write_your_story/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/write_your_story/#uses) | Source: [wp-admin/edit-form-blocks.php:275](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/edit-form-blocks.php#L275-L275) * hook[enqueue_block_editor_assets](https://developer.wordpress.org/reference/hooks/enqueue_block_editor_assets/) * Fires after block assets have been enqueued for the editing interface. * Used by [1 function](https://developer.wordpress.org/reference/hooks/enqueue_block_editor_assets/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/enqueue_block_editor_assets/#uses) | Source: [wp-admin/edit-form-blocks.php:357](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/edit-form-blocks.php#L357-L357) * hook[block_editor_settings](https://developer.wordpress.org/reference/hooks/block_editor_settings/) * Filters the settings to pass to the block editor. * Used by [1 function](https://developer.wordpress.org/reference/hooks/block_editor_settings/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/block_editor_settings/#uses) | Source: [wp-includes/block-editor.php:659](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/block-editor.php#L659-L659) * function[wp_refresh_heartbeat_nonces()](https://developer.wordpress.org/reference/functions/wp_refresh_heartbeat_nonces/) * Adds the latest Heartbeat and REST API nonce to the Heartbeat response. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_refresh_heartbeat_nonces/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_refresh_heartbeat_nonces/#uses) | Source: [wp-admin/includes/misc.php:1317](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/misc.php#L1317-L1325) * function[do_block_editor_incompatible_meta_box()](https://developer.wordpress.org/reference/functions/do_block_editor_incompatible_meta_box/) * Renders a “fake” meta box with an information message, shown on the block editor, when an incompatible meta box is found. * Used by [0 functions](https://developer.wordpress.org/reference/functions/do_block_editor_incompatible_meta_box/#used-by) | Uses [12 functions](https://developer.wordpress.org/reference/functions/do_block_editor_incompatible_meta_box/#uses) | Source: [wp-admin/includes/template.php:1190](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/template.php#L1190-L1239) * function[_get_plugin_from_callback()](https://developer.wordpress.org/reference/functions/_get_plugin_from_callback/) * Internal helper function to find the plugin from a meta box callback. * Used by [2 functions](https://developer.wordpress.org/reference/functions/_get_plugin_from_callback/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/_get_plugin_from_callback/#uses) | Source: [wp-admin/includes/template.php:1251](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/template.php#L1251-L1287) * method[WP_Screen::is_block_editor()](https://developer.wordpress.org/reference/classes/wp_screen/is_block_editor/) * Sets or returns whether the block editor is loading on the current screen. * Used by [0 functions](https://developer.wordpress.org/reference/classes/wp_screen/is_block_editor/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/wp_screen/is_block_editor/#uses) | Source: [wp-admin/includes/class-wp-screen.php:461](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/class-wp-screen.php#L461-L467) * function[get_block_editor_server_block_settings()](https://developer.wordpress.org/reference/functions/get_block_editor_server_block_settings/) * Prepares server-registered blocks for the block editor. * Used by [1 function](https://developer.wordpress.org/reference/functions/get_block_editor_server_block_settings/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/get_block_editor_server_block_settings/#uses) | Source: [wp-admin/includes/post.php:2307](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/post.php#L2307-L2347) * function[the_block_editor_meta_boxes()](https://developer.wordpress.org/reference/functions/the_block_editor_meta_boxes/) * Renders the meta boxes forms. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_block_editor_meta_boxes/#used-by) | Uses [13 functions](https://developer.wordpress.org/reference/functions/the_block_editor_meta_boxes/#uses) | Source: [wp-admin/includes/post.php:2358](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/post.php#L2358-L2528) * hook[filter_block_editor_meta_boxes](https://developer.wordpress.org/reference/hooks/filter_block_editor_meta_boxes/) * Fires right before the meta boxes are rendered. * Used by [1 function](https://developer.wordpress.org/reference/hooks/filter_block_editor_meta_boxes/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/filter_block_editor_meta_boxes/#uses) | Source: [wp-admin/includes/post.php:2374](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/post.php#L2374-L2374) * function[the_block_editor_meta_box_post_form_hidden_fields()](https://developer.wordpress.org/reference/functions/the_block_editor_meta_box_post_form_hidden_fields/) * Renders the hidden form required for the meta boxes form. * Used by [1 function](https://developer.wordpress.org/reference/functions/the_block_editor_meta_box_post_form_hidden_fields/#used-by) | Uses [9 functions](https://developer.wordpress.org/reference/functions/the_block_editor_meta_box_post_form_hidden_fields/#uses) | Source: [wp-admin/includes/post.php:2537](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/post.php#L2537-L2602) * hook[block_editor_meta_box_hidden_fields](https://developer.wordpress.org/reference/hooks/block_editor_meta_box_hidden_fields/) * Adds hidden input fields to the meta box save form. * Used by [1 function](https://developer.wordpress.org/reference/hooks/block_editor_meta_box_hidden_fields/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/block_editor_meta_box_hidden_fields/#uses) | Source: [wp-admin/includes/post.php:2601](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-admin/includes/post.php#L2601-L2601) * hook[use_block_editor_for_post](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post/) * Filters whether a post is able to be edited in the block editor. * Used by [1 function](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post/#uses) | Source: [wp-includes/post.php:8798](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/post.php#L8798-L8798) * function[use_block_editor_for_post_type()](https://developer.wordpress.org/reference/functions/use_block_editor_for_post_type/) * Returns whether a post type is compatible with the block editor. * Used by [2 functions](https://developer.wordpress.org/reference/functions/use_block_editor_for_post_type/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/use_block_editor_for_post_type/#uses) | Source: [wp-includes/post.php:8813](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/post.php#L8813-L8836) * hook[use_block_editor_for_post_type](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post_type/) * Filters whether a post is able to be edited in the block editor. * Used by [1 function](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post_type/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/use_block_editor_for_post_type/#uses) | Source: [wp-includes/post.php:8835](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/post.php#L8835-L8835) * function[get_block_categories()](https://developer.wordpress.org/reference/functions/get_block_categories/) * Returns all the categories for block types that will be shown in the block editor. * Used by [2 functions](https://developer.wordpress.org/reference/functions/get_block_categories/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/get_block_categories/#uses) | Source: [wp-includes/block-editor.php:69](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/block-editor.php#L69-L104) * hook[block_categories](https://developer.wordpress.org/reference/hooks/block_categories/) * Filters the default array of categories for block types. * Used by [1 function](https://developer.wordpress.org/reference/hooks/block_categories/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/block_categories/#uses) | Source: [wp-includes/block-editor.php:100](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/block-editor.php#L100-L100) [Previous Page](https://developer.wordpress.org/reference/since/5.0.0/page/4/?output_format=md) [1](https://developer.wordpress.org/reference/since/5.0.0/?output_format=md) … [3](https://developer.wordpress.org/reference/since/5.0.0/page/3/?output_format=md) [4](https://developer.wordpress.org/reference/since/5.0.0/page/4/?output_format=md) 5 [6](https://developer.wordpress.org/reference/since/5.0.0/page/6/?output_format=md) [Next Page](https://developer.wordpress.org/reference/since/5.0.0/page/6/?output_format=md)