PHP CallFire SDK-身份验证和请求/响应问题

免责声明：php新手学生在这里学习非常努力

我正在尝试构建一个应用程序，它可以与用户交互

在这一点上，我试图实现的就是与API建立通信，并成功地进行请求/响应循环

我已经在XAMPP本地服务器上安装了CallFireSDK与Composer的依赖关系。我想要运行非常基本的示例：它实例化API，发送请求并解析响应

<?php
use CallFire\Api\Rest\Request;
require 'vendor/autoload.php';

$client = CallFire\Api\Client::Rest("<api-login>", "<api-password>", "Broadcast"); //I'm using my valid CallFire API keys here.

$request = new Request\QueryBroadcasts;
$response = $client->QueryBroadcasts($request); //LINE 10

$broadcasts = $client::response($response);

foreach($broadcasts as $broadcast) {
    var_dump($broadcast);
}

AbstractClient.php中的第59行是

public static function response($data, $type = self::FORMAT_XML)
{
    if (is_string($data) && strlen($data) === 0) {
        return true; // Many operations return an empty string for success
    }
    switch ($type) {
        case static::FORMAT_XML:
            return AbstractResponse::fromXml($data); // LINE 59
        case static::FORMAT_JSON:
            return AbstractResponse::fromJson($data);
    }
    throw new InvalidArgumentException("Type must be 'xml' or 'json'");
}

Response.php中的第39行和第50行是

public static function fromXml($document)
    {
        $document = static::getXmlDocument($document);
        // return print_r($document);
        switch ($document->firstChild->nodeName) { // LINE 39 error for this line is Notice: Trying to get property of non-object 
            case 'r:ResourceList':
                return Response\ResourceList::fromXml($document);
            case 'r:Resource':
                return Response\Resource::fromXml($document);
            case 'r:ResourceReference':
                return Response\ResourceReference::fromXml($document);
            case 'r:ResourceException':
                return Response\ResourceException::fromXml($document);
        }
        throw new UnexpectedValueException('Response type not recognized'); // LINE 50: this is what throws the fatal error exception 


    }

第10行在示例代码中突出显示

---

所以我知道API正在发回一个类型不明的响应。为什么，如果我真的在使用SDK和文档中的一个基本示例？我如何检查我得到的响应，以了解它到底是什么？我尝试在response.php文件中使用r_print打印响应，但在浏览器中打印了一个“1”。这对我来说毫无意义。是因为我在浏览器中运行此程序吗？

已解决：在本地主机环境中运行该程序导致了问题。一旦我将应用程序上传到服务器上，一切都正常了

public static function fromXml($document)
    {
        $document = static::getXmlDocument($document);
        // return print_r($document);
        switch ($document->firstChild->nodeName) { // LINE 39 error for this line is Notice: Trying to get property of non-object 
            case 'r:ResourceList':
                return Response\ResourceList::fromXml($document);
            case 'r:Resource':
                return Response\Resource::fromXml($document);
            case 'r:ResourceReference':
                return Response\ResourceReference::fromXml($document);
            case 'r:ResourceException':
                return Response\ResourceException::fromXml($document);
        }
        throw new UnexpectedValueException('Response type not recognized'); // LINE 50: this is what throws the fatal error exception 


    }