It is a local PHP environment that bundles the Heroku client libraries. If you already have your own setup, it is not that big of a deal. For people developing

It is a local PHP environment that bundles the Heroku client libraries. If you already have your own setup, it is not that big of a deal. For people developing on Windows, for example, it can be tricky to even setup the minimal Ruby environment to install Heroku libraries, etc. This is primarily targeted to developers that already know PHP but are getting started with Heroku