注意：尝试在第49行上的C：\ wamp64 \ www \ nx \ x.php中获取非对象的属性

Question

我的问题是我在标题中提到的。我不知道，因为我不知道。

    public function DetailedOrderList(array $searchData = Array()) {
            $this->setUrl('https://api.n11.com/ws/OrderService.wsdl');
            self::$_parameters['searchData'] = $searchData;
        self::$_parameters['pagingData'] = ['itemsPerPage' => 5, 'currentPage' => 0];
            return self::$_sclient->DetailedOrderList(self::$_parameters);
        }


    <?php
    $DetailedOrderList= $n11->DetailedOrderList(
    [
        "productId"=>'',
        "status"=> 'Approwed',
        "buyerName"=> '',
        "orderNumber"=> '',
        "productSellerCode" =>'',
        "recipient"=> '',
        "sameDayDelivery"=> '',
        "period"=>[
            "startDate"=> '?',
            "endDate"=> '?'    
        ],
        "sortForUpdateDate"=> ''
    ]               
    );
    $say = Array(
        Array($DetailedOrderList->orderList->order)
    );
    echo "<table border='1' cellpadding='5' cellspacing='0'>";
    for($i = 0; $i < $say; $i++ )
    {
        echo "<tr>";
        echo "<td><table border='1' cellpadding='5' cellspacing='0' width='100%'><tbody>";
        echo "<tr><th>ID:</th><td>";
        echo $DetailedOrderList->orderList->order[$i]->id;
        echo "</td></tr>";
        echo "<tr><th>Sipariş No:</th><td>";
        echo $DetailedOrderList->orderList->order[$i]->orderNumber;
        echo "</td></tr>";
        echo "<tr>";
        echo "<th>Ürün Adı:</th><td>";
        echo $DetailedOrderList->orderList->order[$i]->orderItemList->orderItem->productName;
        echo "</td></tr>";
        echo "<tr><th>Sipariş Tarih:</th><td>";
        echo $DetailedOrderList->orderList->order[$i]->createDate;
        echo "</td></tr>";  echo "<tr><th>Sipariş Tutar:</th><td>";
        echo $DetailedOrderList->orderList->order[$i]->totalAmount."TL";
        echo "</td></tr>";
        echo "</td></tr>";
        echo "<tr>";
        echo "<th>Ürün Detay:</th><td><a href='urundetay.php?id=".($DetailedOrderList->orderList->order[$i]->orderItemList->orderItem->productSellerCode)."'>";
        echo $DetailedOrderList->orderList->order[$i]->orderItemList->orderItem->productName;
        echo "</a> x ".$DetailedOrderList->orderList->order[$i]->orderItemList->orderItem->quantity."</td></tr>";
        echo "<tr><th>Detaylar:</th><td colspan='2'>";
        echo "<a href='siparisdetay.php?sip=".($DetailedOrderList->orderList->order[$i]->id)."'>Sipariş Detayı</a>";
        echo "</td></tr>";
        echo "<tr><th>Kargo:</th><td colspan='2'>";
        echo $DetailedOrderList->orderList->order[$i]->orderItemList->orderItem->shipmentInfo->shipmentCompany->name;
        echo "</td></tr>";
        echo "</tbody></table></td>";
    }
    echo "</table>";

注意：试图在第49行的C：\ wamp64 \ www \ nx \ x.php中获取非对象的属性 回声$ DetailedOrderList-> orderList-> order [$ i]-> orderItemList-> orderItem-> productName;

只有一种产品没问题。但是，当有多个产品时，我会收到此错误消息。 我不了解解决方案，因为我不了解php。