Phar archives can be executed without the Phar extension [1]: For this to work, it needs a special stub file that extract the phar archive and runs its contents from a temporary directory if no phar extension is found.

Phar::createDefaultStub() creates one such special stub (around 7KiB code).
I've created a gist that shows its usage and indented(!) output: https://gist.github.com/clue/5642099

As such, it would be nice if such a loader stub would could be provided by the StubGenerator. Instead of rewriting the phar parser (see Extract_Phar class in the above gist), one can probably re-use the result from createDefaultStub() similar to this. Special care needs to be taken with regards to the other settings on StubGenerator.

Any input welcome!