get_comment_id_fields( int|WP_Post|null $post = null ): string

2046function get_comment_id_fields( $post = null ) {2047	$post = get_post( $post );2048	if ( ! $post ) {2049		return '';2050	}2051 2052	$post_id     = $post->ID;2053	$reply_to_id = _get_comment_reply_id( $post_id );2054 2055	$comment_id_fields  = "<input type='hidden' name='comment_post_ID' value='$post_id' id='comment_post_ID' />\n";2056	$comment_id_fields .= "<input type='hidden' name='comment_parent' id='comment_parent' value='$reply_to_id' />\n";2057 2058	/**2059	 * Filters the returned comment ID fields.2060	 *2061	 * @since 3.0.02062	 *2063	 * @param string $comment_id_fields The HTML-formatted hidden ID field comment elements.2064	 * @param int    $post_id           The post ID.2065	 * @param int    $reply_to_id       The ID of the comment being replied to.2066	 */2067	return apply_filters( 'comment_id_fields', $comment_id_fields, $post_id, $reply_to_id );2068}