Php 易趣交易API additem调用不返回任何内容，获取'；未定义变量：响应'；加载页面时出错

我正在尝试使用

addItem

调用添加列表。当前正在尝试使用从易趣收到的沙盒凭据

我使用本教程来完成以下操作：

我正确地接收了键值，并适当地设置了参数。加载页面时，会出现以下错误：

Notice: Undefined variable: response in F:\wamp\www\ebay\test1\addItem.php on line 180

当我点击

addItem

按钮时，它不会显示任何错误，但也不会显示成功消息。任何帮助都是值得感激的

整个代码如下所示：

---

和沙盒键值。

因为respose变量在此块中

if (!empty($_POST)) {

// grab our posted keywords and call helper function
// TODO: check if need urlencode
$title = $_POST['title'];
$categoryID = $_POST['categoryID'];
$startPrice = $_POST['startPrice'];
$pictureURL = $_POST['pictureURL'];
$description = $_POST['description'];

// call the getAddItem function to make AddItem call
$response = getAddItem($title, $categoryID, $startPrice, $pictureURL, $description);

}

---

重新加载页面时未设置$response变量，因为它与$\u POST块一起使用。因此，仅在单击“添加项目”按钮时设置

请在给定条件内复制整个响应块。即:

如果（isset（$response））{

//本节中的整个响应块

}

因此，新的响应块代码将为：

   // Display information to user based on AddItem response.

  if(isset($response)){
        // Convert the xml response string in an xml object
        $xmlResponse = simplexml_load_string($response);

        // Verify that the xml response object was created
        if ($xmlResponse) {

            // Check for call success
            if ($xmlResponse->Ack == "Success") {

                // Display the item id number added
                echo "<p>Successfully added item as item #" . $xmlResponse->ItemID . "<br/>";

                // Calculate fees for listing
                // loop through each Fee block in the Fees child node
                $totalFees = 0;
                $fees = $xmlResponse->Fees;
                foreach ($fees->Fee as $fee) {
                    $totalFees += $fee->Fee;
                }
                echo "Total Fees for this listing: " . $totalFees . ".</p>";

            } else {

                // Unsuccessful call, display error(s)
                echo "<p>The AddItem called failed due to the following error(s):<br/>";
                foreach ($xmlResponse->Errors as $error) {
                    $errCode = $error->ErrorCode;
                    $errLongMsg = htmlentities($error->LongMessage);
                    $errSeverity = $error->SeverityCode;
                    echo $errSeverity . ": [" . $errCode . "] " . $errLongMsg . "<br/>";
                }
                echo "</p>";
            }

        }
    }   

//根据AddItem响应向用户显示信息。
如果（isset（$response））{
//转换xml对象中的xml响应字符串
$xmlResponse=simplexml\u load\u字符串（$response）；
//验证是否已创建xml响应对象
如果（$xmlResponse）{
//检查呼叫是否成功
如果（$xmlResponse->Ack==“成功”）{
//显示添加的项目id号
echo“已成功地将项添加为项#”。$xmlResponse->ItemID。“
”；
//计算上市费用
//循环遍历“费用”子节点中的每个费用块
$totalFees=0；
$fees=$xmlResponse->fees；
foreach（$fees->费用为$Fee）{
$totalFees+=$fee->fee；
}
echo“此列表的总费用：.$totalFees.”
；
}否则{
//呼叫失败，显示错误
echo“调用的附加项由于以下错误而失败：
”；
foreach（$xmlResponse->Errors as$error）{
$errCode=$error->ErrorCode；
$errLongMsg=htmlentities（$error->LongMessage）；
$errSeverity=$error->SeverityCode；
echo$errSeverity.：[“$errCode.”]“$errLongMsg.”
”；
}
回声“
”；
}
}
}   

if (!empty($_POST)) {

// grab our posted keywords and call helper function
// TODO: check if need urlencode
$title = $_POST['title'];
$categoryID = $_POST['categoryID'];
$startPrice = $_POST['startPrice'];
$pictureURL = $_POST['pictureURL'];
$description = $_POST['description'];

// call the getAddItem function to make AddItem call
$response = getAddItem($title, $categoryID, $startPrice, $pictureURL, $description);

}

   // Display information to user based on AddItem response.

  if(isset($response)){
        // Convert the xml response string in an xml object
        $xmlResponse = simplexml_load_string($response);

        // Verify that the xml response object was created
        if ($xmlResponse) {

            // Check for call success
            if ($xmlResponse->Ack == "Success") {

                // Display the item id number added
                echo "<p>Successfully added item as item #" . $xmlResponse->ItemID . "<br/>";

                // Calculate fees for listing
                // loop through each Fee block in the Fees child node
                $totalFees = 0;
                $fees = $xmlResponse->Fees;
                foreach ($fees->Fee as $fee) {
                    $totalFees += $fee->Fee;
                }
                echo "Total Fees for this listing: " . $totalFees . ".</p>";

            } else {

                // Unsuccessful call, display error(s)
                echo "<p>The AddItem called failed due to the following error(s):<br/>";
                foreach ($xmlResponse->Errors as $error) {
                    $errCode = $error->ErrorCode;
                    $errLongMsg = htmlentities($error->LongMessage);
                    $errSeverity = $error->SeverityCode;
                    echo $errSeverity . ": [" . $errCode . "] " . $errLongMsg . "<br/>";
                }
                echo "</p>";
            }

        }
    }