我很难让SOAP请求正常工作，因为它需要XML字符串作为输入。
它正在投掷
"SOAP故障：服务器无法处理请求。--->值不能为null。参数名称：s">
无论我发送什么输入，我都使用了nusoap，但没有用，PHP soap库。我使用的代码是：
<?
$aOptions = array(
'location' => 'http://webserviceurl.asmx',
'uri' => 'http://tempuri.org/',
"style" => SOAP_RPC,
"use" => SOAP_ENCODED
);
$client = new SOAPClient(null, $aOptions);
$request ='<item xmlns="rmsItem">
<columns>
<column>description</column>
<column>department</column>
<column>brand</column>
<column>lastsold</column>
<column>lastupdated</column>
<column>quantityonhand</column>
<column>weight</column>
</columns>
<filters>
<filter>
<filterColumn>quantityonhand</filterColumn>
<operator>greaterthan</operator>
<filterValue>20</filterValue>
</filter>
<filter>
<filterColumn>lastsold</filterColumn>
<operator>greaterthan</operator>
<filterValue>01-01-2005</filterValue>
</filter>
</filters>
<sortColumns>
<sortColumn>
<sortColumnName>lastsold</sortColumnName>
<sortType>ascending</sortType>
</sortColumn>
<sortColumn>
<sortColumnName>quantityonhand</sortColumnName>
<sortType>descending</sortType>
</sortColumn>
</sortColumns>
</item>';
//$result = $client->__soapCall('getAllInfo',array('infoRequestXml'=>(string)($request),'errorMessage'=>'') ,array('soapaction' => 'http://webserviceurl/getAllInfo'));
$soapvar = new SoapVar($request , XSD_ANYXML);
$params = array("infoRequestXml" => $soapvar);
//print_r($params);
//$result = $this->soapclient->__soapCall("SaveItem", array("parameters"=>$params), null, $this->soapheaders);
try
{
$result=$client->__soapCall('getAllInfo',array("parameters"=>$params),array('soapaction' => 'http://webserviceurl/getAllInfo'));
}
catch (SoapFault $e) {
echo "SOAP Fault: ".$e->getMessage()."<br />'n";
}
echo "<pre>'n";
echo htmlspecialchars($client->__getLastRequest())."'n";
echo "Response:'n".htmlspecialchars($client->__getLastResponse())."'n";
echo "</pre>";
var_dump($result);
?>
最近两天，我的头撞到了墙上，在谷歌上搜索了这个问题，但没有得到解决或指导我解决的答案。
任何能对此有所了解的人都将不胜感激。提前谢谢。
不要通过SOAPVar运行XML，如果可以的话，可以利用web服务的WSDL选项：
<?php
$client = new SOAPClient(
'http://webserviceurl.asmx?WSDL',
array(
'location' => 'http://webserviceurl.asmx',
'trace' => 1,
'style' => SOAP_RPC,
'use' => SOAP_ENCODED,
)
);
$request = '<item xmlns="rmsItem">
<columns>
<column>description</column>
<column>department</column>
<column>brand</column>
<column>lastsold</column>
<column>lastupdated</column>
<column>quantityonhand</column>
<column>weight</column>
</columns>
<filters>
<filter>
<filterColumn>quantityonhand</filterColumn>
<operator>greaterthan</operator>
<filterValue>20</filterValue>
</filter>
<filter>
<filterColumn>lastsold</filterColumn>
<operator>greaterthan</operator>
<filterValue>01-01-2005</filterValue>
</filter>
</filters>
<sortColumns>
<sortColumn>
<sortColumnName>lastsold</sortColumnName>
<sortType>ascending</sortType>
</sortColumn>
<sortColumn>
<sortColumnName>quantityonhand</sortColumnName>
<sortType>descending</sortType>
</sortColumn>
</sortColumns>
</item>';
$result = array();
$params = array("infoRequestXml" => $request);
try {
$result = $client->__soapCall('getAllInfo', array("parameters"=>$params));
} catch (SoapFault $e) {
echo "SOAP Fault: ".$e->getMessage()."<br />'n";
}
echo "<pre>";
echo htmlspecialchars($client->__getLastRequestHeaders())."'n";
echo htmlspecialchars($client->__getLastRequest())."'n";
echo "Response:'n".htmlspecialchars($client->__getLastResponseHeaders())."'n";
echo htmlspecialchars($client->__getLastResponse())."'n";
echo "</pre>";
var_dump($result);
?>