(PECL eio >= 0.0.1dev)
eio_fdatasync — Synchronize a file's in-core state with storage device.
$fd
[, int $pri = EIO_PRI_DEFAULT
[, callable $callback = NULL
[, mixed $data = NULL
]]] )eio_fdatasync() synchronizes a file's in-core state with storage device.
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(mixed $data, int $result[, resource $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
data
Arbitrary variable passed to callback.
eio_fdatasync() returns request resource on success or FALSE on error.