<?php

$router = new Yaf_Router();

$route  = new Yaf_Route_Static();

$router->addRoute("static", $route);

var_dump($router->getRoute('static')->assemble(
            array(
                ':a' => 'yafaction',
                'tkey' => 'tval',
                ':c' => 'yafcontroller',
                ':m' => 'yafmodule'
            ),
        )
);

var_dump($router->getRoute('static')->assemble(
            array(
                ':a' => 'yafaction',
                'tkey' => 'tval',
                ':c' => 'yafcontroller',
                ':m' => 'yafmodule'
            ),
            array(
                'tkey1' => 'tval1',
                'tkey2' => 'tval2'
            )
        )
);

The above example will output something similar to: