OSTicket API wrapper

We are developing a web application for our company to manage our clients and to simplify our workflow. We would like to use osTicket for communication with the clients. The functions we need are: • Creating tickets • Replying to tickets • Adding internal note to ticket • Creating users • Creating organizations • Adding users to organizations • Changing organizations • Changing users • Removing users from organizations • Changing ticket status • Adding staff agent We would like these functions in an easy to use API wrapper written in PHP so we can use it in our application.