As title, the `librdf` is too old and this binding is not maintained actively from the [website](http://librdf.org/bindings/). Consider the following PHP packages of processing RDF: - [jskos-rdf](https://github.com/gbv/jskos-rdf) is the top of the `easyrdf`. - [easyrdf](https://github.com/njh/easyrdf). And I also need to know about the work of the `RDF` on this source code. Thanks.
