Is there a PHP implementation that targets the JVM (akin to JRuby and Jython)?

Question

How can I run PHP on JVM (akin to Jython and JRuby)? I am aware of the following:

Quercus, which appears to be dead alive and well.
Seems like I've been visiting the wrong website.

webSphere sMash, that appears to have no documentation been shutdown

Is there a more mature project for this?

Answer 1

AFAIK, quercus and P8 are the only two PHP compilers for the JVM, and you already ruled both of them out.

Although I think you are a little bit too harsh: Quercus had its latest release just 23 days ago. Calling it "dead" seems a little premature. And why do you need documentation for P8? The whole point is that it's just PHP. All the documentation you need is right there on PHP.Net.