module.config.php

return array(
    'router' => array(
        'routes' => array(
            'home' => array(
                'type' => 'Zend\Mvc\Router\Http\Literal',
                'options' => array(
                    'route'    => '/',
                    'defaults' => array(
                        'controller' => 'Application\Controller\Index',
                        'action'     => 'index',
                    ),
                ),
            ),
            // The following is a route to simplify getting started creating
            // new controllers and actions without needing to create a new
            // module. Simply drop new controllers in, and you can access them
            // using the path /application/:controller/:action
            'application' => array(
                'type'    => 'Literal',
                'options' => array(
                    'route'    => '/application',
                    'defaults' => array(
                        '__NAMESPACE__' => 'Application\Controller',
                        'controller'    => 'Index',
                        'action'        => 'index',
                    ),
                ),
                'may_terminate' => true,
                'child_routes' => array(
					'default' => array(   
						'type' => 'Segment',   
						'options' => array(       
							'route' => '/[:controller[/:action][/:locale]]',       
							'constraints' => array(           
							  'controller' => '[a-zA-Z][a-zA-Z0-9_-]*',           
							  'action'     => '[a-zA-Z][a-zA-Z0-9_-]*',           
							  'locale'     => '[a-zA-Z]{2}_[a-zA-Z]{2}',       
							),       
							'defaults' => array(           
							  'locale' => 'en_US'       
							), 
						),
					),
					
					
                ),
            ),
        ),
    ),
    'service_manager' => array(
        'abstract_factories' => array(
            'Zend\Cache\Service\StorageCacheAbstractServiceFactory',
            'Zend\Log\LoggerAbstractServiceFactory',
        ),
        'aliases' => array( 
            'translator' => 'MvcTranslator',
        ),
    ),
    'translator' => array(
        'locale' => 'en_US',
        'translation_file_patterns' => array(
            array(
                'type'     => 'gettext',
                'base_dir' => __DIR__ . '/../language',
                'pattern'  => '%s.mo',
            ),
        ),
    ),
	'cache' => array(
		'adapter' => array(
			'name'    => 'Filesystem',
			'options' => array(
				'cache_dir' => __DIR__ . '/../../../data/cache',
				'ttl'       => '3600'
			)
		),
		'plugins' => array(
			array(
				'name'    => 'serializer',
				'options' => array()
			),
			'exception_handler' => array(
				'throw_exceptions' => true
			)
		)
	),
    'controllers' => array(
        'invokables' => array(
            'Application\Controller\Index' => 'Application\Controller\IndexController'
        ),
    ),
    'view_manager' => array(
        'display_not_found_reason' => true,
        'display_exceptions'       => true,
        'doctype'                  => 'HTML5',
        'not_found_template'       => 'error/404',
        'exception_template'       => 'error/index',
        'template_map' => array(
            'layout/layout'           => __DIR__ . '/../view/layout/layout.phtml',
            'application/index/index' => __DIR__ . '/../view/application/index/index.phtml',
            'error/404'               => __DIR__ . '/../view/error/404.phtml',
            'error/index'             => __DIR__ . '/../view/error/index.phtml',
        ),
        'template_path_stack' => array(
            __DIR__ . '/../view',
        ),
    ),
    // Placeholder for console routes
    'console' => array(
        'router' => array(
            'routes' => array(
            ),
        ),
    ),
);

Module.php

<?php

namespace Application;

use Zend\Mvc\ModuleRouteListener;
use Zend\Mvc\MvcEvent;

class Module
{
    public function onBootstrap(MvcEvent $e)
    {
        $eventManager        = $e->getApplication()->getEventManager();
        $moduleRouteListener = new ModuleRouteListener();
        $moduleRouteListener->attach($eventManager);
		$app = $eventManager->attach(       
			'dispatch',       
			function($e) {            
			  $routeMatch = $e->getRouteMatch();            
			  if ($routeMatch->getParam('locale') != '') {                
				$this->serviceManager = $e->getApplication()->getServiceManager();                
				$translator = $this->serviceManager->get('translator');                
				$translator->setLocale($routeMatch->getParam('locale'));            
			  }        
			}, 100    
		);
    }

    public function getConfig()
    {
        return include __DIR__ . '/config/module.config.php';
    }

    public function getAutoloaderConfig()
    {
        return array(
            'Zend\Loader\StandardAutoloader' => array(
                'namespaces' => array(
                    __NAMESPACE__ => __DIR__ . '/src/' . __NAMESPACE__,
                ),
            ),
        );
    }
}