使用选项调用sqlsrv_query（），但没有参数

According to the docs, the call to sqlsrv_query() should look like this:

mixed sqlsrv_query ( resource $conn , string $sql [, array $params [, array $options ]] )

But let's say I" want to do a simple SELECT query with no params, but I do want to pass some options?

This snippet seems to work erratically,

$dbh = blah...blah...
$query = 'SELECT * FROM myTable';
$options = array('Scrollable' => SQLSRV_CURSOR_CLIENT_BUFFERED);
$statement = sqlsrv_query($dbh, $query, array(), $options);

sometimes returning this error from sqlsrv_error():

Array
(
    [0] => Array
            (
            [0] => IMSSP
            [SQLSTATE] => IMSSP
            [1] => -14
            [code] => -14
            [2] => An invalid parameter was passed to sqlsrv_query.
            [message] => An invalid parameter was passed to sqlsrv_query.
        )
)

What is the correct way to pass options to sqlsrv_query but not parameters?

Per suggestions below, I've also tried $statement = sqlsrv_query($dbh, $query, null, $options); with the same results.

Thanks!