HipHop Virtual Machine¶
HipHop Virtual Machine (HHVM) is a process virtual machine based on just-in-time (JIT) compilation, serving as an execution engine for PHP and Hack programming languages.
There are currently issues that prevent XRL from running smoothly on HHVM. Nonetheless, XRL is actively tested against HHVM in our Continuous Integration process.
We plan to write more tests in the future to isolate those problems and to help make HHVM better. Meanwhile, users are advised to run the stock PHP interpreter (either from http://php.net/ or from another distributor) when using XRL.