FRONTEND_MVC/modules/sitemap/Sitemap.php

<?php

namespace sitemap;
function print_a( $a ){
	echo "<pre>";
		print_r( $a );
	echo "</pre>";
}
use yii\base\BootstrapInterface;
use yii;
use yii\base\Module;

class Sitemap extends Module implements BootstrapInterface
{
    public $layout = "@sitemap/views/main.php";
//	public $defaultRoute = 'default';
    public function init()
    {
        parent::init();
//		$this->bootstrap();
    }

    /**
     * {@inheritdoc}
     */
    public function bootstrap($app)
    {
//        parent::bootstrap($app);
		$prefix = '/';
        if ($urlManager = $app->getUrlManager() && 0) {
            $urlManager->addRules([
//                $prefix . '<module:' . $this->id . '>/<controller:\w+>/<action:\w+>/<page:\d+>' => '<module>/<controller>/<action>',
                $prefix . '<module:' . $this->id . '>/<controller:\w+>/<action:\w+>' => '<module>/<controller>/<action>',
                $prefix . '<module:' . $this->id . '>/<controller:\w+>' => '<module>/<controller>/index',
            ], true);
		}
        $app->getUrlManager()->addRules([
				[
                    'pattern' => 'sitemap/sitemap',
                    'route' => '/sitemap/default/index',
                    'suffix' => '.xml'
                ],
            'sitemap/sitemap.xml' => 'sitemap/default/index',

            'sitemap/news/<page:\d+>' => 'sitemap/default/news'

		], true);
	}


}