Determines whether a post or content string has blocks.

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.

• parse_blocks()

$post int|string|WP_Post|null Optional

Post content, post ID, or post object.
Defaults to global $post.

Default: null

bool Whether the post has blocks.

File: wp-includes/blocks.php. View all references

function has_blocks( $post = null ) {
	if ( ! is_string( $post ) ) {
		$wp_post = get_post( $post );

		if ( ! $wp_post instanceof WP_Post ) {
			return false;
		}

		$post = $wp_post->post_content;
	}

	return false !== strpos( (string) $post, '<!-- wp:' );
}