I see that when you set up a project there is a place to include php in the preview (kind of like server mapping on homesite). A check box for "use preview prefix"and then you have to give it the prefix.
What are they asking for?
Quanta has a bunch of docs for languages but I can't find the how to's
You can preview php files through http ( set "Project->Options->Network->Preview Prefix" to you http prefix for files ) so if you have dir/file.php in project and you have it on [somehost...] you need to set "preview prefix" [somehost...] ( in preview will be "http://somehost/"; + "dir/file.php" )