Allowed memory size of error X on nusoap - php

Question

PHP is connected to SOAP between NuSOAP and I can recieve data from PHP. After getting data, I get timeout error because of data size is huge which is received. You can see xdebug print out on below.I can run same service using PHP native SOAP command.
http://s15.postimg.org/c9491lf1n/2015_03_08_02_07_10.jpg
I am using following settings. I can not get a solution about the above error although I increased maximum limit as possible as much.
ini_set('memory_limit', "512M");
ini_set('max_execution_time', 60000); //x saniye
ini_set("display_errors", 1);
ini_set("max_input_time ", 6000);
I am waiting your solution about this issue urgently. Thank for your support.
Edit:
My NuSOAP client function:
function nusoapCall($method,$params,$returnType="array"){
global $WSDLURL,$debugMode;
require_once('tools/nusoap/nusoap.php');
$soapClient = new nusoap_client($WSDLURL, 'wsdl');
$soapClient->soap_defencoding = 'UTF-8';
$soapClient->decode_utf8 = false;
$soapClient->setUseCURL(true);
//$soapClient->loadWSDL();
$soapClient->setCurlOption(CURLOPT_CONNECTTIMEOUT, 60);
if($debugMode == 1){
$soapClient->debug_flag = false;
}
$tResult = $soapClient->call( $method,$params);
if($returnType=="object"){
$tResult = array_to_object($tResult);
}
$soapError = $soapClient->getError();
echo $soapClient->getDebug();
if (!empty($soapError)) {
$errorMessage = 'Nusoap object creation failed: ' . $soapError;
throw new Exception($errorMessage);
return false;
}else{
return $tResult;
}
}