Exemplo de ViewHelper

gistfile1.php

<?php

namespace Application\View\Helper;

use Zend\View\Helper\AbstractHelper;
use Zend\ServiceManager\ServiceLocatorAwareInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

/**
 * Retorna o recurso sendo acessado
 * 
 * @category Application
 * @package View\Helper
 * @author  Elton Minetto <eminetto@coderockr.com>
 */
class RecursoAtual extends AbstractHelper implements ServiceLocatorAwareInterface
{
    /**
     * Set the service locator.
     *
     * @param ServiceLocatorInterface $serviceLocator
     * @return CustomHelper
     */
    public function setServiceLocator(ServiceLocatorInterface $serviceLocator)
    {
        $this->serviceLocator = $serviceLocator;
        return $this;
    }
    /**
     * Get the service locator.
     *
     * @return \Zend\ServiceManager\ServiceLocatorInterface
     */
    public function getServiceLocator()
    {
        $helperPluginManager = $this->serviceLocator;
        $serviceLocator = $helperPluginManager->getServiceLocator();
        return $serviceLocator;
    }

    /**
     * Executa a lógica do helper
     * @return array
     */
    public function __invoke()
    {
        $routeMatch = $this->getServiceLocator()->get('application')->getMvcEvent()->getRouteMatch();  
        
        $moduleName = $routeMatch->getParam('moduleUri');
        $controllerName = $routeMatch->getParam('controller');
        $actionName = $routeMatch->getParam('action');
        $id = $routeMatch->getParam('id', 0);        
        
    }

}