<?php
header_remove('X-Powered-By');
header("Server: SP-XML");
header("Content-Type: text/xml");

// $request = file_get_contents('php://input');

if( $_POST['package'] == 'rws' ) {
   $file = 'rws.xml';
} else {
   $file = 'app3.xml';
}

$string = file_get_contents($file, FILE_USE_INCLUDE_PATH);

$response = new SimpleXMLElement($string);
echo $response->asXML();
?>