wp_update_comment_count( int|null $post_id, bool $do_deferred = false ): bool|void

2809function wp_update_comment_count( $post_id, $do_deferred = false ) {2810	static $_deferred = array();2811 2812	if ( empty( $post_id ) && ! $do_deferred ) {2813		return false;2814	}2815 2816	if ( $do_deferred ) {2817		$_deferred = array_unique( $_deferred );2818		foreach ( $_deferred as $i => $_post_id ) {2819			wp_update_comment_count_now( $_post_id );2820			unset( $_deferred[ $i ] );2821			/** @todo Move this outside of the foreach and reset $_deferred to an array instead */2822		}2823	}2824 2825	if ( wp_defer_comment_counting() ) {2826		$_deferred[] = $post_id;2827		return true;2828	} elseif ( $post_id ) {2829		return wp_update_comment_count_now( $post_id );2830	}2831}