If you have your own custom PIREP system, you can still interact with vaCentral. Below is an empty class which can be used in your PHP system to send information to vaCentral. You will still require an API key, and tie in the code with your own PIREP system. View the code comments to see how it expects data, and how to post data to it.

This is the format of the XML which has to be sent to the server.