This is pretty cool but obviously you can optimise a microbenchmark to fit your case perfectly. Is like creating a statistic in your favour because it doesnt tell anything about how speed compares to php7 for example overall. Still interesting implementation but I am skeptic about if you can make a whole application this much faster.
Thanks for your comment. You are right about the fact that we obviously heavily optimized specifically for this microbenchmark. However, Peachpie's architecture is designed in such a way that enables us to optimize most processes and features fairly easily. It would be quite surprising if entire applications ran 6x as fast as they would using regular PHP, but it is not inconceivable.