I've ran into trouble with SOAP, I've never had this issue before and can't find any information on line that helps me solve it.

The following code

$wsdl = "path/to/my/wsdl";
$client = new SoapClient($wsdl, array('trace' => true));
//$$textinput is passed in and is a very large string with rows in <item></item> tags
$soapInput = new SoapVar($textinput, XSD_ANYXML);
$res = $client->dataprofilingservice(array("contents" => $soapInput));
$response = $client->__getLastResponse();

var_dump($res);//outputs null
var_dump($response);//provides the proper response as I would expect.

I've tried passing params into the SoapClient constructor to define soap version but that didnt' help. I've also tried it with the trace param set to false and not present which as expected made $response null but $res was still null. I've tried the code on both a linux and windows install running Apache.

The function definition in the WSDL is (xxxx is for security reasons)

<portType name="xxxxServiceSoap">
 <operation name="dataprofilingservice">
  <input   message="tns:dataprofilingserviceSoapIn"/>
  <output message="tns:dataprofilingserviceSoapOut"/>
 </operation>
</portType>

I have it working using the __getLastResponse() but its annoying me it will not work properly.

I've put together a small testing script, does anyone see any issues here.

//very simplifed dataset that would normally be 
//read in from a CSV file of about 1mb
$soapInput = getSoapInput("asdf,qwer\r\nzzxvc,ewrwe\r\n23424,2113");
$wsdl = "path to wsdl";

try {
  $client = new SoapClient($wsdl,array('trace' => true,'exceptions' => true));

} catch (SoapFault $fault) {
  $error = 1;
  var_dump($fault);
} 

try {
    $res = $client->dataprofilingservice(array("contents" => $soapInput));
    $response = $client->__getLastResponse();
    echo htmlentities($client->__getLastRequest());
    echo '<hr>';
    var_dump($res);

    echo "<hr>";
    echo(htmlentities($response));
} catch (SoapFault $fault) {
    $error = 1;
    var_dump($fault);

}         
function getSoapInput($input){
$rows = array();
    $userInputs = explode("\r\n", $input);

    $userInputs = array_filter($userInputs);
    //
    $inputTemplate = " <contents>%s</contents>";
    $rowTemplate = "<Item>%s</Item>";
    //
    $soapString = "";
    foreach ($userInputs as $row) {
        // sanitize
        $row = htmlspecialchars(addslashes($row));
        $xmlStr = sprintf($rowTemplate, $row);
        $rows[] = $xmlStr;
    }
    $textinput = sprintf($inputTemplate, implode(PHP_EOL, $rows));
    $soapInput = new SoapVar($textinput, XSD_ANYXML);

   return $soapInput;

}