(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.
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