Can anybody give some use cases for this? Would this allow me to use JS libraries (made for node for instance) in my PHP code, or is there something else I could do with this?
most libs that work with node wouldn't work with this since they're not going to support the node module loading system. You could create some kind of polyfill, but what's the point?
Probably easier to just php `exec()` a node script that does what you want. In fact, if you're considering using this, you'd be better off using node since it will almost undoubtedly perform better.
