westdc-core/Westdc/Helpers/Auth.php

<?php
namespace Westdc\Helpers;

use Zend\Authentication\AuthenticationService;
use Zend\Authentication\Storage\Session as SessionStorage;

class Auth
{
	public $auth;
	function __construct($getAuthService = false)
	{
		$config = Config::get();

		$this->auth = new AuthenticationService();
		$this->auth->setStorage(new SessionStorage($config->session_namespace));
	}
	
	public function getInstance()
	{
		return $this->auth;
	}
	
	public function clearIndentity()
	{
		return $this->auth->clearIdentity();
	}
	
	public function getIdentity($field)
	{
        if(isset($this->auth->getIdentity()->$field))
		    return $this->auth->getIdentity()->$field;
        else
            return null;
	}
}