Function and usage of get_hooked_blocks() in wordpress


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    The get_hooked_blocks() function in WordPress is used for retrieving block types that are hooked into a specific block. This function is particularly useful in the context of block-based themes and plugins, where the relationships and positions of blocks relative to each other are essential for layout and design.


    • get_hooked_blocks()


    • This function retrieves the block types that are hooked (attached or associated) to a given block. It groups these block types based on the anchor block type (the block to which others are hooked) and their relative position. This means that it organizes the output based on the type of block and where the hooked blocks are located in relation to the anchor block.


    $hooked_blocks = get_hooked_blocks();

    In this sample usage, $hooked_blocks will contain an array of block types. These block types are organized based on their anchor block type and relative position. For example, if you have a 'paragraph' block and there are several blocks like 'image', 'quote', etc., hooked to it in different positions (before, after, inside), get_hooked_blocks() will provide an array where these relationships are outlined.


    • Type: array[]
    • Description: The function returns an associative array. Each key in this array represents an anchor block type, and the corresponding value is another array that contains the hooked block types, categorized by their relative positions to the anchor block.

    Practical Application:

    • This function is particularly useful for developers working with complex page layouts in WordPress. It allows them to understand and manipulate the structure of pages by understanding how different blocks are interconnected.
    • It's also beneficial for debugging purposes, helping to visualize the block structure of a page or a template.


    • As WordPress continues to evolve, especially with the Gutenberg editor, functions like get_hooked_blocks() play a critical role in providing flexibility and control over the layout and design of websites.

    Remember to always check the current WordPress documentation for the latest updates and best practices regarding this function.

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