eio_ftruncate
(PECL eio >= 0.0.1dev)
eio_ftruncate — Truncate a file
Beschreibung
mixed
$fd,int
$offset = 0,int
$pri = EIO_PRI_DEFAULT,callable
$callback = NULL,mixed
$data = NULL): resource
eio_ftruncate() causes a regular file referenced by
fd file descriptor to be truncated to precisely
length bytes.
Parameter-Liste
-
fd -
Stream, Socket resource, or numeric file descriptor.
-
offset -
Offset from beginning of the file
-
pri -
The request priority:
EIO_PRI_DEFAULT,EIO_PRI_MIN,EIO_PRI_MAX, ornull. Ifnullpassed,priinternally is set toEIO_PRI_DEFAULT. -
callback -
callbackfunction 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.
Rückgabewerte
eio_ftruncate() returns request resource on success,Bei einem Fehler wird false zurückgegeben..
Siehe auch
- eio_truncate() - Truncate a file
