Function and usage of block_version() in wordpress


Answers ( 1 )


    The block_version() function in WordPress is a utility designed to determine the version of the block format used in a given content string. Here's a detailed explanation and a sample usage:


    block_version( string $content ): int


    This function is utilized to identify the current block format version of the content passed as a string. It's particularly useful in the context of the WordPress Block Editor (Gutenberg), which introduced a new way of creating and managing content using blocks.


    • $content (string, required): This is the content you want to test. It should be a string that potentially contains block structures.


    • int: The function returns an integer indicating the block format version. The return value is 1 if the content contains one or more blocks, and 0 if it does not contain any blocks.

    Sample Usage:

    Here's an example of how block_version() can be used within a WordPress theme or plugin:

    $content = get_the_content(); // Get the content of the current post
    $block_version = block_version($content);
    if ($block_version === 1) {
        echo 'This content is using the new block format.';
    } else {
        echo 'This content is using the classic format or does not contain blocks.';

    In this sample, the function get_the_content() is used to retrieve the content of the current post. block_version() is then called with this content, and based on the return value, a message is displayed indicating whether the content is using the new block format or not.

    This function is particularly useful for developers who need to handle content differently based on whether it's formatted with the classic editor or the block editor. For instance, certain styling or scripts might only be applicable to block-formatted content, and block_version() provides a simple way to check for this.

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