PHP使用NuSOAP调用Web服务的方法

<?php
require_once(./lib/nusoap.php);
$client = new soapclientnusoap(http://www.devtrackn.com/webservice/server.php);
$err = $client->getError();
if ($err) {
  // Display the error
  echo <p><b>Constructor error:  . $err . </b></p>;
  // At this point, you know the call that follows will fail
}
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
// update_location method parameter
$param = array(
    device_number   => 9910948357,
    latitude     => 40.727757,
    longitude     => -73.984366,
    battery_status  => 30
  );
// user_action method parameter
$param2 = array(
    device_number   => 27ab2026da5213ebd6c95e5fbe50965bdfaddf4b,
    latitude     => 40.727757,
    longitude     => -73.984366,
    user_action    => Meeting_Test
  );
// sos method parameter
$param3 = array(
    device_number   => 9910948357,
    latitude     => 40.727757,
    longitude     => -73.984366,
  );
//$result = $client->call(update_location, $param);
//$result = $client->call(user_action, $param2);
//$result = $client->call(sos, $param3);
$result = $client->call(user_entity_status, array(device_number => 27ab2026da5213ebd6c95e5fbe50965bdfaddf4b));
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
// Check for a fault
if ($client->fault) {
  echo <p><b>Fault: ;
  print_r($result);
  echo </b></p>;
} else {
  // Check for errors
  $err = $client->getError();
  if ($err) {
    // Display the error
    echo <p><b>Error:  . $err . </b></p>;
  } else {
    // Display the result
    echo "<pre>";
    print_r($result);
    echo "</pre>";
  }
}
echo <h2>Request</h2>;
echo <pre> . htmlspecialchars($client->request, ENT_QUOTES) . </pre>;
echo <h2>Response</h2>;
echo <pre> . htmlspecialchars($client->response, ENT_QUOTES) . </pre>;
/*
// Display the debug messages
echo <h2>Debug</h2>;
echo <pre> . htmlspecialchars($client->debug_str, ENT_QUOTES) . </pre>;
*/
?>