Interesting question on which micro-routing frameworks for PHP in r/php. Slim, dispatch, and klein are my favourites for their simplicity and procedural approach. Aura Router looks interesting too but feels too heavy.
As I mentioned before, someone should really add the missing routing functions to the PHP core. Thus, making PHP a fully-featured micro-framework with PDO as model and PHP itself as view. As they said, PHP as Template Engine (PATE). Two benefits for doing so. First, we have a standard way of doing routing in PHP. Second, no dependancy on any frameworks for single file script (think apc.php) or small size app (think simple REST app).
Can someone in php-internals add this to PHP 5.6?