$user= //Actual username;
$password= //Actual Password
$harvest_user = $user; // Harvest username, usually an email address
$harvest_pass = $password; //  Harvest password
$harvest_account = $account;

require_once 'HarvestAPI.php';

spl_autoload_register(array('HarvestAPI', 'autoload') );

$harvestAPI = new HarvestAPI();
$harvestAPI->setUser($harvest_user);
$harvestAPI->setPassword($harvest_pass);
$harvestAPI->setAccount($harvest_account);

$result = $harvestAPI->getUsers();
// If Harvest returns successful
if ($result->code == 200) {
  $people = $result->data;
}
else{
echo "Not Successful";
}
?>