HHVM 4.113 is released! This release marks the end of support for 4.107;
HHVM 4.108–4.112 remain supported, as do the 4.80 and 4.102 LTS releases.Highlights Packages for Ubuntu 21.04 (Hirsute Hippo) are now available.Breaking Changes Fixed a bug where the typechecker would sometimes incorrectly infer the type
of a value when dealing with arraykey and num-typed values. This may
reveal some previously undetected errors.
The INI option hhvm.server.allow_duplicate_cookies was removed.Slack GroupIf you are interested in HHVM, you’re welcome to join our
Slack group.This replaces our IRC channel, which has been inactive for a long time.
HHVM (HipHop Virtual Machine)会将PHP代码转换成高级别的字节码（通常称为中间语言）。然后在运行时通过即时（JIT）编译器将这些字节码转换为x64的机器码