[Operyl]

HHVM can't make its way entirely back to core, and is in fact completely separating from PHP entirely now[1]. If I recall correctly, while PHP7 implemented better op-caching, it has _not_ implemented JIT compilation yet.

1. https://hhvm.com/blog/2017/09/18/the-future-of-hhvm.html

[acomjean]

This is true. But HHVM lit a fire under the php devs to get php7 out the door with significant performance improvements. (php6 never saw the light of day). Php has improved so much with the 7x releases.

[tgtweak]

Php7 is pretty damn fast with apc cache and some tuning. Not to mention it doesn't have any of the silly restrictions that hhvm had.

[muglug]

It hasn't - a JIT compiler (if it comes) will come in PHP 8.