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# eio_fdatasync

(PECL eio >= 0.0.1dev)

eio_fdatasync — Synchronize a file's in-core state with storage device.

### Beschreibung

resource eio_fdatasync ( mixed `$fd` [, int `$pri` = EIO_PRI_DEFAULT [, callable `$callback` = NULL [, mixed `$data` = NULL ]]] )

eio_fdatasync() synchronizes a file's in-core state with storage device.

### Parameter-Liste

`fd`

  Stream, Socket resource, or numeric file descriptor, e.g. returned by eio_open().

`pri`

  The request priority: `EIO_PRI_DEFAULT`, `EIO_PRI_MIN`, `EIO_PRI_MAX`, or `NULL`. If `NULL` passed, `pri` internally is set to `EIO_PRI_DEFAULT`.

`callback`

  `callback` function is called when the request is done. It should match the following prototype:

  `void callback($data, $result);`
  `$data` is custom data passed to the request. `$result` contains request-specific result value; basically, the value returned by corresponding system call.
`data`

  Arbitrary variable passed to `callback`.

### Rückgabewerte

eio_fdatasync() returns request resource on success or `FALSE` on error.

eio_fchown
eio_fstat
Eio Funktionen
PHP Manual