header('Content-Type: text/html; charset=utf-8');

$client = new SoapClient("http://api.isobil.com.tr/v2/isobil_API_XML.asmx?WSDL");

$dataxml="



KULLANICI ADI
ŞİFRE
FIRMA


17


";
$params = array( 'data' => $dataxml);

ob_start();
$client->GetUserAccount($params)->GetUserAccountResult;
$var = ob_get_clean();

function kes($a,$b){
$c=explode("<".$a.">",$b);
$c=explode("",$c[1]);
return $c[0];
}

$companyname=kes("CompanyName",$var);
$name=kes("Name",$var);
$lastname=kes("LastName",$var);
?>

Bu şekilde kullanabilirsin