serialize_block() │ WP 5.3.1

Returns the content of a block, including comment delimiters, serializing all attributes from the given parsed block.

This should be used when preparing a block to be saved to post content. Prefer render_block preparing a block for display. Unlike render_block, this does not evaluate a block's render_callback, and will instead preserve the markup as parsed.

No Hooks.

Returns

String. String of rendered HTML.

Usage

serialize_block( $block );

$block(array) (required)

An associative array of a single parsed block object. See WP_Block_Parser_Block.

• blockName(string|null)
  Name of block.

• attrs(array)
  Attributes from block comment delimiters.

• innerBlocks(array[])
  List of inner blocks. An array of arrays that have the same structure as this one.

• innerHTML(string)
  HTML from inside block comment delimiters.

• innerContent(array)
  List of string fragments and null markers where inner blocks were found.

Changelog

serialize_block() serialize block code ^{WP 7.0}

function serialize_block( $block ) {
	$block_content = '';

	$index = 0;
	foreach ( $block['innerContent'] as $chunk ) {
		$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
	}

	if ( ! is_array( $block['attrs'] ) ) {
		$block['attrs'] = array();
	}

	return get_comment_delimited_block_content(
		$block['blockName'],
		$block['attrs'],
		$block_content
	);
}