eio_fsynceio_ftruncate
(PECL eio >= 0.0.1dev)
eio_ftruncate — Truncate a file
Descrição
resource eio_ftruncate
( int $fd
[, int $offset = 0
[, int $pri = EIO_PRI_DEFAULT
[, callback $callback = NULL
[, mixed $data = NULL
]]]] )
eio_ftruncate() causes a regular file referenced by fd file descriptor to be truncated to precisely length bytes.
Parâmetros
- fd
-
The file descriptor.
- 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:
$data is custom data passed to the request. $result contains request-specific result value; basically, the value returned by corresponding system call.void callback($data, $result); - data
-
Arbitrary variable passed to callback.
Valor Retornado
eio_ftruncate() returns request resource on success or FALSE on error.
Veja Também
- eio_truncate
User Contributed Notes
eio_ftruncate
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