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Project Type: WordPress Reference

Blocks API

Framework for registering, parsing, and rendering block-based content in WordPress. Since: 5.0.0 Source: wp-includes/blocks.php, wp-includes/block-editor.php, wp-includes/class-wp-block*.php Components Component Description functions.md Core block registration, parsing, and rendering functions class-wp-block.md Parsed block...

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WP_Block_List

Class representing a list of block instances. Since: 5.5.0 Source: wp-includes/class-wp-block-list.php Description WP_Block_List is an iterable collection of WP_Block instances. It implements Iterator, ArrayAccess, and Countable interfaces for convenient traversal....

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WP_Block_Parser

Parses a document and constructs a list of parsed block objects. Since: 5.0.0 Source: wp-includes/class-wp-block-parser.php Description WP_Block_Parser tokenizes HTML content containing block comment delimiters and builds a tree of block...

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WP_Block_Styles_Registry

Class used for interacting with block styles. Since: 5.3.0 Source: wp-includes/class-wp-block-styles-registry.php Description WP_Block_Styles_Registry is a singleton that manages alternative visual styles for block types. Block styles provide different appearance options...

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WP_Block_Supports

Class encapsulating and implementing Block Supports. Since: 5.6.0 Source: wp-includes/class-wp-block-supports.php Description WP_Block_Supports is a singleton that registers and applies block support features. Block supports provide common functionality like colors, spacing,...

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WP_Block_Template

Class representing a block template. Since: 5.8.0 Source: wp-includes/class-wp-block-template.php Description WP_Block_Template represents a full-page template or template part built with blocks. Templates can come from themes (files), the database (customized),...

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Block Pattern Functions

WordPress provides wrapper functions for registering and managing block patterns and pattern categories. Pattern Functions register_block_pattern() Registers a new block pattern. register_block_pattern( string $pattern_name, array $pattern_properties ): bool Parameters: Parameter...

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Block Patterns Hooks

Filters and actions for customizing block pattern behavior. Filters should_load_remote_block_patterns Controls whether patterns are loaded from the WordPress.org Pattern Directory. apply_filters( 'should_load_remote_block_patterns', bool $should_load_remote ): bool Parameters: Parameter Type Description...

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Block Templates System

WordPress Block Templates (also known as FSE - Full Site Editing templates) are a fundamental part of block themes. They allow themes and plugins to define site structure using blocks...

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WP_Navigation_Fallback

Manages fallback behavior for Navigation menus in block themes. Since: 6.3.0 File: wp-includes/class-wp-navigation-fallback.php Overview When a block theme uses the Navigation block without specifying a particular navigation menu, WordPress needs...

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