eio_truncate
(PECL eio >= 0.0.1dev)
eio_truncate — Truncate a file
Description
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
Parameters
-
path -
File path
-
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.
Return Values
eio_busy() returns request resource on success, or false on failure.
See Also
- eio_ftruncate() - Truncate a file
