问从PHP执行存储的Proc时出错

EN

        $params['contract_id'] = '00990007';
        $params['major_version'] = '1';
        $procedure_params = array(
            array(&$params['contract_id'], SQLSRV_PARAM_OUT),
            array(&$params['major_version'], SQLSRV_PARAM_OUT)
        );

        $sql = "EXEC [MTP].[Process_07a_create_a_contract_version_wrapper] @contract_id = ?, @major_version = ?";
        $stmt = sqlsrv_prepare($conn, $sql, $procedure_params);
        if( !$stmt ) {
            die( print_r( sqlsrv_errors(), true));
        }
        if(sqlsrv_execute($stmt)){
            while($res = sqlsrv_next_result($stmt)){
                // make sure all result sets are stepped through, since the output params may not be set until this happens
            }
            // Output params are now set,

        }else{
            die( print_r( sqlsrv_errors(), true));
        }