使用php curl发送SOAP请求

Question

我有这个代码，我想用它来发送SOAP请求，但结果是什么都没有成功，也没有错误代码或消息。那么如何使用以下代码将正确的SOAP请求发送到正确的URL

Service Endpoint URL
https://pod.test.at.serviceDomain.com

Web Service Definition Language (WSDL) URL
https://pod.test.at.serviceDomain.com/pod/services/PodService?wsdl

$soapUrl = "https://pod.test.at.serviceDomain.com/pod/services/PodService?wsdl"; // I've tried the other url but the same result
$soapUser = "testuser";  //  username
$soapPassword = "testpass"; // password

$xml_post_string = "<?xml version='1.0' encoding='UTF-8'?>
<wsdl:definitions name='PodService' targetNamespace='http://www.serviceDomain.com/enterprise/distribution/podService/v1' xmlns:soap='http://schemas.xmlsoap.org/wsdl/soap/'
      xmlns:tns='http://www.serviceDomain.com/enterprise/distribution/podService/v1' 
  xmlns:wsdl='http://schemas.xmlsoap.org/wsdl/' xmlns:xsd='http://www.w3.org/2001/XMLSchema'>
<wsdl:documentation>Version: 1.0.0</wsdl:documentation>
<wsdl:types>
<xsd:schema targetNamespace='http://www.serviceDomain.com/enterprise/distribution/podService/v1'
                  xmlns:soap='http://schemas.xmlsoap.org/wsdl/soap/' 
                  xmlns:tns='http://www.serviceDomain.com/enterprise/distribution/podService/v1' 
                  xmlns:wsdl='http://schemas.xmlsoap.org/wsdl/' 
                  xmlns:xsd='http://www.w3.org/2001/XMLSchema'>
        <xsd:element name='executeOrder'>
            <xsd:complexType>
                <xsd:sequence>
                    <xsd:element name='username' type='testuser'>
                        </xsd:element>
                    <xsd:element name='password' type='testpass'>
                        </xsd:element>
                    <xsd:element minOccurs='0' name='retailerId' type='tns:'>
                        </xsd:element>                       
                    <xsd:element name='orderId' type='tns:123456'>
                        </xsd:element>                        
                    <xsd:element name='faceValue' type='tns:50.00'>
                        </xsd:element>                        
                    <xsd:element name='productId' type='tns:000666'>
                        </xsd:element>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>";

       $headers = array(
            "Content-type: text/xml;charset=\"utf-8\"",
            "Accept: text/xml",
            "Cache-Control: no-cache",
            "Pragma: no-cache",
            "SOAPAction: \"run\"",
            "Content-length: ".strlen($xml_post_string),
        );

        $url = $soapUrl;

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        //curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlRequest);
        [update: changed to:] 
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_post_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_VERBOSE, 0);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

        $response = curl_exec($ch);
        echo $response;


        $response1 = str_replace("<soap:Body>","",$response);
        $response2 = str_replace("</soap:Body>","",$response1);

        $parser = simplexml_load_string($response2);
        echo $parser['resultCode'];

       curl_close($ch);