Nope! As of last year, HHVM no longer targets PHP [1]; instead, it targets a Facebook-specific variant of PHP called "Hack". It will still run some PHP code, but that's on its way out.

Even better/worse, PHP 7.2 with an opcode cache can actually outperform HHVM on many practical benchmarks [2], and 7.3 is faster still.

[1]: https://hhvm.com/blog/2018/09/12/end-of-php-support-future-o...

[2]: http://web.archive.org/web/20180305000053/https://kinsta.com...