Which PHP RPC (XML or JSON) library have you successfully used?

Question

Which PHP RPC (XML or JSON) library have you successfully used?

I have done some research but haven't been able to find one library that stands out from the others.

I've found the following:

XML-RPC for PHP

XML_RPC (PEAR)

JSON-RPC PHP

And a few others that either don't look very active or mature.

Answer 1

I've used XML_RPC (PEAR) successfully. I'm not personally a fan of the xml-rpc "way" but the library was simple to use and we have a few dozen clients using it daily and pulling a fair amount of data over the wire and we've never had any problems.

We aren't pushing the envelope with this at all, in any way, but i'm very happy with the library since I don't even think about it anymore. The library isn't elegant or anything but neither is php or rpc, right?