Php 我正试图从laravel调用SOAP服务，但在curl调用后收到的响应是状态200，但输出为空？

这是我在curl调用后收到的输出。我尝试使用以下代码访问SOAP服务—它在SOAP CI上工作，但在我尝试使用curl访问它时不工作。 我甚至试过用它

函数callSoapService（） {

$serviceURL='1！'http://fglpg001.futuregenerali.in/BO/Service.svc';
$requestString=”
14545453301
韦巴格
10-10-2020
15-10-2020

$serviceURL = 'http://fglpg001.futuregenerali.in/BO/Service.svc';

$requestString = "<Root>
    <Uid>14545453301</Uid>
    <VendorCode>webagg</VendorCode>
    <VendorUserId></VendorUserId>
    <PolicyHeader>
        <PolicyStartDate>10-10-2020</PolicyStartDate>
        <PolicyEndDate>15-10-2020</PolicyEndDate>
        <AgentCode>60001464</AgentCode>
        <BranchCode></BranchCode>
        <MajorClass>TVL</MajorClass>
        <ContractType>PTI</ContractType>
        <METHOD>ENQ</METHOD>
        <PolicyIssueType>I</PolicyIssueType>
        <PolicyNo></PolicyNo>
        <ClientID></ClientID>
        <ReceiptNo></ReceiptNo>
    </PolicyHeader>
    <POS_MISP>
        <Type>P</Type>
        <PanNo>BNTPF1253P</PanNo>
    </POS_MISP>
<Client>
    <ClientType>I</ClientType>
    <CreationType>C</CreationType>
    <Salutation>MR</Salutation>
    <FirstName>GABBAR</FirstName>
    <LastName>SINGH</LastName>
    <DOB>22-Mar-1974</DOB>
    <Gender>M</Gender>
    <MaritalStatus>S</MaritalStatus>
    <Occupation>ACCT</Occupation>
    <PANNo />
    <GSTIN></GSTIN>
    <AadharNo />
    <CKYCNo></CKYCNo>
    <EIANo></EIANo>
        <Address1>
            <AddrLine1>DSFDSFDS SFDS FS FSAADSA SADS</AddrLine1>
            <AddrLine2>DSFDS SF DSFDSGADSG</AddrLine2>
            <AddrLine3></AddrLine3>
            <Landmark></Landmark>
            <Pincode>400005</Pincode>
            <City>MUMBAI</City>
            <State>MAHARASHTRA</State>
            <Country>IND</Country>
            <AddressType>R</AddressType>
            <HomeTelNo></HomeTelNo>
            <OfficeTelNo></OfficeTelNo>
            <FAXNO></FAXNO>
            <MobileNo>9870007339</MobileNo>
            <EmailAddr>rajesh.govindan@futuregenerali.in</EmailAddr>
            </Address1>
        <Address2>
            <AddrLine1>DSFDSFDS SFDS FS FSAADSA SADS</AddrLine1>
            <AddrLine2>DSFDS SF DSFDSGADSG</AddrLine2>
            <AddrLine3></AddrLine3>
            <Landmark></Landmark>
            <Pincode>400005</Pincode>
            <City>MUMBAI</City>
            <State>MAHARASHTRA</State>
            <Country>IND</Country>
            <AddressType>R</AddressType>
            <HomeTelNo></HomeTelNo>
            <OfficeTelNo></OfficeTelNo>
            <FAXNO></FAXNO>
            <MobileNo>9870007339</MobileNo>
            <EmailAddr>rajesh.govindan@futuregenerali.in</EmailAddr>
        </Address2>
    </Client>
    <Receipt>
        <UniqueTranKey>1516255768</UniqueTranKey>
        <CheckType></CheckType>
        <BSBCode></BSBCode>
        <TransactionDate>21-03-2020</TransactionDate>
        <ReceiptType>IVR</ReceiptType>
        <Amount>1047</Amount>
        <TCSAmount></TCSAmount>
        <TranRefNo>403993715517142603</TranRefNo>
        <TranRefNoDate>21-03-2020</TranRefNoDate>
    </Receipt>
    <Risk>
        <SubProductName>Single Trip</SubProductName>
        <FamilyType>Individual</FamilyType>
        <VistingCountries>
            <Countries>
                <Countries>Canada</Countries>
                <Continent>Americas</Continent>
            </Countries>
        </VistingCountries>
        <CoverageName>Future Travel Suraksha-World - Individual</CoverageName>
        <CoverageValue>TIW</CoverageValue>
        <PlanName>Future Travel Suraksha-World Individual - Standard</PlanName>
        <PlanValue>STD</PlanValue>
        <VisaName>Travel</VisaName>
        <VisaValue>B</VisaValue>
        <PurposeName>Leisure</PurposeName>
        <PurposeValue>L</PurposeValue>
        <DateOfDeparture>22-03-2020</DateOfDeparture>
        <DateOfreturn>31-03-2020</DateOfreturn>
        <TripDuration>9</TripDuration>
        <Insured>
            <Name>GABBAR SINGH</Name>
            <DOB>22-Mar-1974</DOB>
            <Gender>Male</Gender>
            <RelationShip>Self</RelationShip>
            <PassportNo>A1243234</PassportNo>
            <OccupationName>Accountant</OccupationName>
            <OccupationValue>ACCT</OccupationValue>
            <NomineeName>BASANTI SINGH</NomineeName>
            <NomineeRelationShip>Wife</NomineeRelationShip>
        </Insured>
        <Sponsor>
            <Name></Name>
            <DOB></DOB>
            <EmailId></EmailId>
            <Phone></Phone>
            <Address></Address>
            <Relation></Relation>
        </Sponsor>
        <University>
            <Name></Name>
            <Address></Address>
            <EmailId></EmailId>
        </University>
    </Risk>
</Root>";

$headers = array(
    "Content-type: application/xml",
    "Accept : text/html,application/xml",
);

//return $requestString;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $serviceURL);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POSTFIELDS, $requestString);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
$output = curl_exec($ch);
curl_close($ch);

// return $output;

$array = json_decode(json_encode((array)simplexml_load_string($output)), true);

$arraynew = json_decode(json_encode((array)simplexml_load_string($array[0])), true);

return $arraynew;