eio_truncate
(PECL eio >= 0.0.1dev)
eio_truncate — Truncate a file
설명
$path
[, int $offset = 0
[, int $pri = EIO_PRI_DEFAULT
[, callable $callback = NULL
[, mixed $data = NULL
]]]] )
eio_truncate() causes the regular file named by path to be truncated to
a size of precisely length bytes
인수
-
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.
반환값
eio_busy() returns request resource on success or FALSE on error.
참고
- eio_ftruncate
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