.htaccess Url Rewrite Remove Query-String Keys

Question

I have a set of urls like...

www.example.com/page/1/name/abc
www.example.com/city/la/name/abc
www.example.com/page/1/name/abc/city/la
www.example.com/page/1/

And want to convert them as..

www.example.com/1/abc
www.example.com/la/abc
www.example.com/1/abc/la
www.example.com/1/

Basically i want to hide keys from query string.

How to do this? Any Help?

Edit

I have different keys for every page and there are about 25 keys per page.

Answer 1

You can use Zend_Controller_Router_Route and/or Zend_Controller_Router_Route_Regex and define the routes

$route = new Zend_Controller_Router_Route(
    ':key/:city_name',
    array(
        'controller' => 'somecontroller',
        'action'     => 'pageAction'
    ),
    array('key' => '^\d+$')
);
$router->addRoute('page', $route); // www.example.com/1/abc

$route = new Zend_Controller_Router_Route(
    ':key/:city_name',
    array(
        'controller' => 'somecontroller',
        'action'     => 'cityAction'
    ),
    array('key' => '^\d+\w+$') // www.example.com/1a/abc
);
$router->addRoute('city', $route);

Answer 2

Front controller is a design pattern which maps uri through single point and Zend is using front controller pattern. This maping can be change at bootstrap.php. I googled and found this question which is pretty similar.