'post_parent', 'id' => 'ID', ); public function start_el( &$output, $data_object, $depth = 0, $args = array(), $current_object_id = 0 ) { // Restores the more descriptive, specific name for use within this method. $page = $data_object; $pad = str_repeat( ' ', $depth * 3 ); if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) { $args['value_field'] = 'ID'; } $output .= "\t{$args['value_field']} ) . '"'; if ( $page->ID === (int) $args['selected'] ) { $output .= ' selected="selected"'; } $output .= '>'; $title = $page->post_title; if ( '' === $title ) { /* translators: %d: ID of a post. */ $title = sprintf( __( '#%d (no title)' ), $page->ID ); } $title = apply_filters( 'list_pages', $title, $page ); $output .= $pad . esc_html( $title ); $output .= "\n"; } }