Hello World

* * Would be transformed to: *

Hello World

* * @since 7.0.0 * * @param string $block_content The block content. * * @return string Filtered block content. */ function block_core_paragraph_add_class( $block_content ) { if ( ! $block_content ) { return $block_content; } $processor = new WP_HTML_Tag_Processor( $block_content ); if ( $processor->next_tag( 'p' ) ) { $processor->add_class( 'wp-block-paragraph' ); } return $processor->get_updated_html(); } add_filter( 'render_block_core/paragraph', 'block_core_paragraph_add_class' ); /** * Registers the `core/paragraph` block on server. * * @since 7.0.0 */ function register_block_core_paragraph() { register_block_type_from_metadata( __DIR__ . '/paragraph' ); } add_action( 'init', 'register_block_core_paragraph' );