using SQL and Zendserver

I have used i5_query and -5_program_call for years to do an SSL and RPG
calls from ZendServer for IBM i, but am now using the newer Toolkit. I
have RPG calls working, but can't find documentation for SQL. Here's how
I do the RPG stuff

require_once('ToolkitService.php');
$conn = ToolkitService::getInstance($db, $user, $pass);
$params[] = $conn->AddParameterPackDec('both', 9, 2, '', '', $OHSHDS);
$result = $conn->PgmCall('TWR001', '', $params, null, null);

I have been searching the Zend site for the last two hours and cant' find
anything

Help

Larry Kleinman
Kleinman Associates, Inc.
212-949-6469