i am trying to develop website using zend framework so i had created one index.php file where all my requests goes and c.reated two controller one is IndexController and other is TestController

Class IndexController extends Zend_Controller_Action{
    public function indexAction(){
        echo "Index Index Jamla";
    }
    public function displayAction(){
        echo "Index Display Jamla";
    }
}

now when i access the url http://test/ it correctly calls IndexController and its IndexAction function but when i access the url http://test/index/index it displays the message url /index/index was not found on this server same it does when i access http://test/test/index

though http://test/ is equivalent to http://test/index/index