'OP00002119', 'serial_no' => '018b08cfddbd', 'merchant_no' => $shop->lklSjNo, 'term_no' => $shop->lklScanTermNo, 'merchantPrivateKeyPath' => $merchantPrivateKeyPath, 'lklCertificatePath' => $lklCertificatePath, ]; $laResource = new Lakala($params); $orderSn = 'KD_CS61235138'; //$orderSn = 'KD26449727'; $cashParams = [ 'out_order_no' => $orderSn, ]; $response = $laResource->cashierQuery($cashParams); print_r($response); } }