eio_truncate
(PECL eio >= 0.0.1dev)
eio_truncate — Truncate a file
Beschreibung
string
$path
,int
$offset
= 0,int
$pri
= EIO_PRI_DEFAULT,callable
$callback
= NULL,mixed
$data
= NULL): resource
eio_truncate() causes the regular file named by path
to be truncated to
a size of precisely length
bytes
Parameter-Liste
-
path
-
File path
-
offset
-
Offset from beginning of the file.
-
pri
-
The request priority:
EIO_PRI_DEFAULT
,EIO_PRI_MIN
,EIO_PRI_MAX
, ornull
. Ifnull
passed,pri
internally is set toEIO_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
.
Rückgabewerte
eio_busy() returns request resource on success,Bei einem Fehler wird false
zurückgegeben..
Siehe auch
- eio_ftruncate() - Truncate a file