eio_truncate
eio_truncate
(PECL eio >= 0.0.1dev)
eio_truncate — Truncate a file
Description
resource eio_truncate ( string $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
Parameters
path
File path
offset
Offset from beginning of the file.
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.
Return Values
eio_busy() returns request resource on success or FALSE on error.
See Also
- eio_ftruncate
← eio_syncfs
eio_unlink →
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
