class request {

    public $request;

    public function __construct() {
        $this->request = new data();
    }

}

class data {

    public $EntityCode = 10324;
    public $TicketId = 6610042;

}

$webService = "https://test1.e-collect.com/d_Express/webservice/eCollectWebservicesv2.asmx";
$wsdl = "https://test1.e-collect.com/d_Express/webservice/eCollectWebservicesv2.asmx?wsdl";
$customer = new SoapClient($wsdl, array('trace' => true, 'debug' => true));
$req = new request();

$request = new SoapVar($req, SOAP_ENC_OBJECT, 'request', 'http://www.avisortech.com/eCollectWebservices');
try {
    //$result=$customer->__soapCall('getTransactionInformation', new SoapParam($request,'request'));
    $result = $customer->getTransactionInformation(new SoapParam($request, 'request'));
} catch (Exception $exc) {
    echo $exc->getMessage();
}
var_dump($customer->__getLastRequest());
echo($result);

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.avisortech.com/eCollectWebservices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <SOAP-ENV:Body>
        <ns1:getTransactionInformation xsi:type="ns1:request">
            <request>
                <EntityCode>10324</EntityCode>
                <TicketId>6610042</TicketId>
            </request>
        </ns1:getTransactionInformation>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ecol="http://www.avisortech.com/eCollectWebservices">
   <soapenv:Header/>
   <soapenv:Body>
      <ecol:getTransactionInformation>
         <ecol:request>
            <ecol:EntityCode>10324</ecol:EntityCode>
            <ecol:TicketId>6610042</ecol:TicketId>
         </ecol:request>
      </ecol:getTransactionInformation>
   </soapenv:Body>
</soapenv:Envelope>