php – 如何在授权后进行捕获？以及如何退款？在omnipay

omn​​ipay没有完整的文档！我试图在授权后进行捕获,但我似乎无法做到正确.

<?PHP

if (!defined('BASEPATH'))
    exit('No direct script access allowed');

use Omnipay\Common\GatewayFactory;

class Welcome extends CI_Controller {

    function __construct() {
        parent::__construct();
        $this->load->helper('url');
    }    
    public function authorize() {

        $gateway = GatewayFactory::create('PayPal_Express');
        $gateway->setUsername('***');
        $gateway->setPassword('***');
        $gateway->setSignature('***');
        $gateway->setTestMode(true);

        $response = $gateway->authorize(
                        array(
                            'cancelUrl' => base_url('welcome/authorize_return'),
                            'returnUrl' => base_url('welcome/authorize_return'),
                            'amount' => '1.99',
                            'currency' => 'USD'
                        )
                )->send();

        $response->redirect();
    }

    public function authorize_return() {
        $gateway = GatewayFactory::create('PayPal_Express');
        $gateway->setUsername('***');
        $gateway->setPassword('***');
        $gateway->setSignature('***');
        $gateway->setTestMode(true);

        $response = $gateway->completeAuthorize(
                        array(
                            'cancelUrl' => base_url('welcome/authorize_return'),
                            'returnUrl' => base_url('welcome/authorize_return'),
                            'amount' => '1.99',
                            'currency' => 'USD'
                        )
                )->send();

        echo $responsemsg = $response->getMessage();

        $data = $response->getData();
        $ref = $response->getTransactionReference();
        $response2 = $gateway->capture($data)->send();
        print_r($response2);
    }    
}

我需要将状态从“待定”更改为“已完成”(例如：我发货后).

我怎样才能退款？何时？如果交易状态完成,我可以退款吗？或仅在特定状态下,它们是什么？

当“付款状态”为“待定”且“已完成”时,我收到“您无法退还此类交易”：

    function __construct() {
        parent::__construct();
        $this->load->helper('url');

        $this->gateway = GatewayFactory::create('PayPal_Express');
        $this->gateway->setUsername('***');
        $this->gateway->setPassword('***');
        $this->gateway->setSignature('***');
        $this->gateway->setTestMode(true);
    }
public function refund($transactionReference, $amount) {

            $ref = $transactionReference;

            $data = array(
                'transactionReference' => $ref,
                'amount' => $amount,
            );
            $response = $this->gateway->refund($data)->send();
            if ($response->isSuccessful()) {
                // success
                return 'done';
            } else {
                return $response->getMessage();
            }
        }

解决方法:

如果您想立即捕获付款,只需在初始请求中调用purchase()和completePurchase()而不是authorize()和completeAuthorize()(购买会进行组合授权和捕获).

如果您想稍后捕获付款(例如,物品发货时),则需要执行以下操作.

// after initial completeAuthorize()
// store $ref in your database with the payment
$ref = $response->getTransactionReference();

// then later, when you want to capture it
$data = array(
    'transactionReference' => $ref,
    'amount' => '10.00', // pass original amount, or can be less
);
$response = $gateway->capture($data)->send();
if ($response->isSuccessful()) {
    // success
} else {
    // error, maybe you took too long to capture the transaction
    echo $response->getMessage();
}