has_blocks() WordPress Function
The has_blocks() function checks whether a post or content has blocks. This can be useful for conditionally loading styles or scripts when a post has blocks.
has_blocks( int|string|WP_Post|null $post = null ) #
Determines whether a post or content string has blocks.
Description
This test optimizes for performance rather than strict accuracy, detecting the pattern of a block but not validating its structure. For strict accuracy, you should use the block parser on post content.
See also
Parameters
- $post
- (int|string|WP_Post|null)(Optional) Post content, post ID, or post object. Defaults to global $post. - Default value: null 
Return
(bool) Whether the post has blocks.
Source
File: wp-includes/blocks.php
function has_blocks( $post = null ) {
	if ( ! is_string( $post ) ) {
		$wp_post = get_post( $post );
		if ( $wp_post instanceof WP_Post ) {
			$post = $wp_post->post_content;
		}
	}
	return false !== strpos( (string) $post, '<!-- wp:' );
}
Expand full source codeCollapse full source codeView on TracView on GitHub
Changelog
| Version | Description | 
|---|---|
| 5.0.0 | Introduced. |