How to make slashes understand in nginx?

Question

PHP

I wrote a server on Apache home hosting, now I need to transfer it to a server where nginx1.2.1
and routing does not work there, that is,
$routes = explode('/', $_SERVER['REQUEST_URI']);
And there, further, each slash already divides the action into a controller, etc.
for example site.ru/app/controller/action
and just here nginx crashes with 404 they say it does not find such files, how to make it work in Apache style?

Answer 1

Show nginx config.