gistfile1.php

<?php
  //...
  // Recuperation du "SessionManager" afin de pouvoir se logger
  $sessionManager = $result->returnval->sessionManager;
  // Creation de la requete SOAP
  $soapMessage = array(
      "_this"    => new SoapVar($sessionManager->{'_'},  XSD_STRING, $sessionManager->type),
      "userName" => "login", //ou new SoapVar("login", XSD_STRING,'xsd:string');
      "password" => "password" //ou new SoapVar("password", XSD_STRING,'xsd:string');
  );
  // Authentification
  $result = $connection->Login($soapMessage);