我想要达到什么:我试图从web服务器获得响应。有了这个响应，我有一些数据，我需要提取。我已经到达了从webservice接收响应的点。
问题是什么:我使用cURL从服务器获得数据响应，但我无法从答案中提取数据，因为它总是返回空值。
我试过的:我试图在数组中解析结果(没有返回值)我试图用新的SimpleXMLElement(空对象)解析结果我试着用JSON编码，然后再解码(空数组)我试图爆炸结果(没有返回好的值)
我不知道该怎么办了，谁来帮我看看。
My cURL code:
$xml = '
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://dpd.com/common/service/types/Authentication/2.0" xmlns:ns1="http://dpd.com/common/service/types/ShipmentService/3.1">
<soapenv:Header>
<ns:authentication>
<delisId>'.$delisId.'</delisId>
<authToken>'.$auth_token.'</authToken>
<messageLanguage>'.$messageLanguage.'</messageLanguage>
</ns:authentication>
</soapenv:Header>
<soapenv:Body>
<ns1:storeOrders>
<printOptions>
<printerLanguage>'.$printerLanguage.'</printerLanguage>
<paperFormat>'.$paperFormat.'</paperFormat>
</printOptions>
<order>
<generalShipmentData>
<identificationNumber>'.$identificationNumber.'</identificationNumber>
<sendingDepot>'.$sendingDepot.'</sendingDepot>
<product>'.$product.'</product>
<mpsCompleteDelivery>'.$mpsCompleteDelivery.'</mpsCompleteDelivery>
<sender>
<name1>'.$send_name.'</name1>
<street>'.$send_street.'</street>
<country>'.$send_country.'</country>
<zipCode>'.$send_zipcode.'</zipCode>
<city>'.$send_city.'</city>
<customerNumber>'.$send_customerNumber.'</customerNumber>
</sender>
<recipient>
<name1>'.$rec_name.'</name1>
<street>'.$rec_street.'</street>
<state>'.$rec_state.'</state>
<country>'.$rec_country.'</country>
<zipCode>'.$rec_zipcode.'</zipCode>
<city>'.$rec_city.'</city>
</recipient>
</generalShipmentData>
<parcels>
<parcelLabelNumber>'.$parcelLabelNumber.'</parcelLabelNumber>
</parcels>
<productAndServiceData>
<orderType>'.$orderType.'</orderType>
</productAndServiceData>
</order>
</ns1:storeOrders>
</soapenv:Body>
</soapenv:Envelope>
';
$headers = array(
"POST HTTP/1.1",
"Content-type: application/soap+xml; charset='"utf-8'"",
"SOAPAction: '"http://dpd.com/common/service/ShipmentService/3.1/storeOrders'"",
"Content-length: ".strlen($xml)
);
$url = 'https://public-ws-stage.dpd.com/services/ShipmentService/V3_1/';
$cl = curl_init();
curl_setopt($cl, CURLOPT_URL, $url);
curl_setopt($cl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($cl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($cl, CURLOPT_POST, 1);
curl_setopt($cl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($cl, CURLOPT_POSTFIELDS, "$xml");
curl_setopt($cl, CURLOPT_RETURNTRANSFER, 1);
$output_cl = curl_exec($cl);
curl_close($cl);
//return $output_cl;
$output_xml = new SimpleXMLElement($output_cl);
foreach($output_xml->orderresult as $orderresult)
{
foreach($orderresult->parcellabelspdf as $pdf)
{
return $pdf;
}
}
来自服务器的响应(我认为是字符串格式，但不确定):
<soap:envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:body>
<ns2:storeordersresponse xmlns:ns2="http://dpd.com/common/service/types/ShipmentService/3.1">
<orderresult>
<parcellabelspdf>pdflabel</parcellabelspdf>
<shipmentresponses>
<identificationnumber>idnumber</identificationnumber>
<mpsid>mpsid</mpsid>
<parcelinformation>
<parcellabelnumber>labelnumber</parcellabelnumber>
</parcelinformation>
</shipmentresponses>
</orderresult>
</ns2:storeordersresponse>
</soap:body>
</soap:envelope>
我想提取parcellabelspdf值和mpsid值
尝试使用DOMDocument
$doc = new DOMDocument();
$doc->loadXML($output_cl);
$mpsid = $doc->getElementsByTagName( "mpsid" );
$mpsid_value= $mpsid->item(0)->nodeValue;
下面是一个带注释的代码示例。在理解如何访问名称空间方面存在一些基本问题。我的示例显示了这些冗长的内容(我还建议您在自己构建时，在中间使用->asXML()来调试您已经完成了多少)。
<?php
/*
* @link https://stackoverflow.com/questions/24363786/extract-data-from-curl-response-keeps-returning-no-value
*/
$buffer = <<<XML
<soap:envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:body>
<ns2:storeordersresponse xmlns:ns2="http://dpd.com/common/service/types/ShipmentService/3.1">
<orderresult>
<parcellabelspdf>pdflabel</parcellabelspdf>
<shipmentresponses>
<identificationnumber>idnumber</identificationnumber>
<mpsid>mpsid</mpsid>
<parcelinformation>
<parcellabelnumber>labelnumber</parcellabelnumber>
</parcelinformation>
</shipmentresponses>
</orderresult>
</ns2:storeordersresponse>
</soap:body>
</soap:envelope>
XML;
$xml = simplexml_load_string($buffer);
// into <soap:*> namespace
$body = $xml->children('soap', true)->body;
// into <ns2:*> namespace
$storeordersresponse = $body->children('ns2', true)->storeordersresponse;
// into document default namespace (no namespace)
$orderresult = $storeordersresponse->children()->orderresult;
// you can now traverse as usual as you've reached the <orderresult> element
$mpsid = $orderresult->shipmentresponses->mpsid;
echo $mpsid->asXML(); // prints "<mpsid>mpsid</mpsid>"
如果您不想在代码中进行遍历，并且您已经了解了如何使用名称空间，那么这里有一个古老但非常有用的问题A。它介绍了XPath的提示，可以省去大量的输入:
- 用SimpleXML解析具有多个名称空间的XML