serialize_block ( $block )
- (WP_Block_Parser_Block) block A single parsed block object.
- (string) String of rendered HTML.
- Introduced in WordPress: 5.3.1
- Deprecated in WordPress: —
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` when 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.