(PECL eio >= 0.0.1dev)
Truncate a file
resource eio_ftruncate ( mixed $fd [, int $offset = 0 [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]]] )
eio_ftruncate() causes a regular file referenced by fd
file descriptor to be truncated to precisely length
bytes.
Parameters:
fd
Stream, Socket resource, or numeric 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:
void callback(mixed $data, int $result[, resource $req]);
data
Arbitrary variable passed to callback
.
Returns:
eio_ftruncate() returns request resource on success or FALSE
on error.
Please login to continue.