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我使用 asp.net 框架 4 创建了 Web 服务：

[WebMethod]
public DataSet GetMembers(string memberId, string thirdName)
{
    string connStr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
    SqlConnection cn = new SqlConnection(connStr);
    SqlDataAdapter da = new SqlDataAdapter();
    DataSet ds = new DataSet();

    da.SelectCommand = new SqlCommand(@"SELECT MemberMaster.MemberId,MemberMaster.FirstName,MemberMaster.SecondName,MemberMaster.ThirdName,MemberMaster.CivilNo,MemberMaster.DateOfBirth,MemberSubcription.MemberId
                                        FROM MemberMaster inner join MemberSubcription on MemberMaster.MemberId=MemberSubcription.MemberId
                                        WHERE MemberMaster.MemberId=@MemberId and MemberMaster.ThirdName=@ThirdName", cn);
    da.SelectCommand.Parameters.Add("@MemberId", SqlDbType.NVarChar).Value = memberId;
    da.SelectCommand.Parameters.Add("@ThirdName", SqlDbType.NVarChar).Value = thirdName;

    ds.Clear();
    da.Fill(ds);
    return ds;
}

它在 localhost 中运行良好，但是当我在 php 中调用它时：

<?php
$wsdlUrl = "http://xxxx/WS/WebService.asmx?WSDL";  
$client = new soapclient($wsdlUrl);
$params = array('memberId' => 'W1100045','thirdName' => 'Ali');              
$result = $client->GetMembers($params);
$echoText = '';
if (is_null($result->GetMembersResult))
{
   echo "no result";
}
else
{
  echo $result->GetMembersResult;
}
?>

出现此错误：Catchable fatal error: Object of class stdClass could not be convert to string on line 23

有什么问题，我该如何解决这个问题？

4

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