The Hack HHVM JIT is typically more performant than standard PHP 7. However, that is more of an apples to oranges comparison of JIT vs Non-JIT than Lang to Lang

The Hack HHVM JIT is typically more performant than standard PHP 7. However, that is more of an apples to oranges comparison of JIT vs Non-JIT than Lang to Lang comparison. That said, PHP 7 has squeezed most of the performance from the language and the low hanging fruit is gone. However, PHP 8 looks to bring a standard JIT to PHP [1]. I'd guess that once that happens Hack / HHVM may no longer have any advantage. [1] https://hub.packtpub.com/php-8-and-7-4-to-come-with-just-in-time-jit-to-make-most-cpu-intensive-workloads-run-significantly-faster/ https://hub.packtpub.com/php-8-and-7-4-to-come-with-just-in-...