使用PHP SDK从Paypal获取SKU值

我正在使用Paypal PHP SDK

我可以得到这个值：

$mail = $payment->payer->payer_info->email;
$name = $payment->payer->payer_info->first_name;
$lname = $payment->payer->payer_info->last_name;
$contry = $payment->payer->payer_info->shipping_address->country_code;

但是，我没能得到SKU。我尝试了以下几种选择：

// Option #1
$sku =  $payment->transactions->item_list->items->sku;

// Option #2
$sku =  $payment->transactions->item_list->items->0->sku;

但是什么也得不到，第二个选项出现错误

部分输出：

....
"payer": {
    "payment_method": "paypal",
    "status": "VERIFIED",
    "payer_info": {
        "email": "mymail@gmail.com",
        "first_name": "name",
        "last_name": "mylastname",
        "payer_id": "00000000",
        "shipping_address": {
            .....
        },
        "country_code": "nnnnn",
        "business_name": "nnnnn"
    }
},
"transactions": [
    {
        "amount": {
            "total": "0.01",
            "currency": "USD",
            "details": {}
        },
        "payee": {
            "merchant_id": "00000000000",
            "email": "mymail@gmail.com"
        },
        "description": "Payment description",
        "invoice_number": "000000000",
        "item_list": {
            "items": [
                {
                    "name": "nnnnnn",
                    "sku": "1562",
                    "price": "0.01",
                    "currency": "USD",
                    "quantity": 1
                }
            ],
            ....

如何获取SKU（1562）的值？

试试以下方法：-

 $sku = $payment['transactions']['item_list']['items']['sku'];

---

我在这里找到了一些好代码：

它必须是这样的：

transactions[0]->item_list->items[0]->price ;

---

交易和项目是如Gabor所说的数组。

尝试将交易定义为新数组。因为在payer_信息站之后只有一个{，但是在事务站之后[{.yeh transactions&items are array，谢谢您的评论：）