Commit buffer cache to disk « eio_sync_file_range eio_syncfs » PHP Manual Eio 函式 Commit buffer cache to disk eio_sync (PECL eio >= 0.0.1dev)eio_sync — Commit buffer cache to disk 說明 eio_sync(int $pri = EIO_PRI_DEFAULT, callable $callback = NULL, mixed $data = NULL): resource 參數 此函式沒有參數。 返回值 eio_sync() returns request resource on success, 或者在失敗時返回 false.