Ajax without .php but with routes

I work on a connection between Symfony 2 and Construct 2..

The Problem is that symfony want that I don't use links like test.de/ajax.php it want links like test.de/ajax

Is there a Way to change the ajax function so that it doesn?t expect a .php file ? Or is there any plugin ?

You shouldn't need to use PHP for server side scripting. As long as your C2 AJAX call is a valid URL you should be fine.

scirra.com/manual/107/ajax