You should first get a working maven 3 installation. All additional stuff will be handled by maven itself. To maven downloads
As soon as you are able to invoke maven (command line mvn) everything will be fine. Before using maven for php you must tell maven where to find it. Have a look at the prepare page.
Now that's it. There is no additional setup needed. Maven will now find maven for php and it will find all the nice modules already being created and uploaded to the repository.
