Which is the minimum PHP version, supported by Carbon Fields? We support PHP 5.3+. I don’t know much about PHP. Do you have an administration interface for creating containers and fields? Nope. Our goal is to provide developers with an elegant and expressive code syntax to build containers and fields within WordPress. Can I create repeatable sets of fields? Yes. We call them Complex Fields – fields that contain other fields. You can even create complex fields with multiple sets of fields. Then, when creating a repeatable entry, you can select which set of fields to use. Can I nest complex (repeatable) fields? If yes, how many levels deep? Yes, you can nest the fields, at an unlimited depth. The only limit is your imagination. :)

Is Carbon Fields completely free? Yes. Can I use Carbon Fields for commercial purposes? Sure, go ahead! It is completely open source.