I am serching for a script (preferably in PHP) or an external solution which lets me create an "url shortener" with advanced reports.

We have been using Google Short Links for a while: it works really well, but it lacks reporting (it only displays a counter with the total number of redirects). Our setup is as follows: "go.mydomain.com" points to the web service, and we can create links such as "go.mydomain.com/product1".

What I'm looking for is a similar service (or self-hosted solution) but with advanced reports, so we can track redirects by day, month, etc, distinguish between mobile and desktop users (very important!) and so on.