HHVM 3.8.0 发布，这是第一个在 HHVM lockdown 方面做性能提升的版本，此外还包含以下更新：
the proxygen http server (hhvm -m server -v Server.Type=proxygen)
stream_socket_enable_crypto() for client sockets
Automatic typechecking of Hack code. Previously, the hh_client static analysis tool would have to be separately run. Now, results from hh_client will be included in the runtime errors too. (Running it manually is still the recommended way for fast error feedback though!) The hhvm.hack.lang.auto_typecheck INI option controls this behavior.
HipHop VM(HHVM)是Facebook推出的用来执行PHP代码的虚拟机，它是一个PHP的JIT（Just-In- Time）编译器，同时具有产生快速代码和即时编译的优点。
软件详情：http://hhvm.com/blog/9803/hhvm-3-8-0
下载地址：https://github.com/facebook/hhvm/releases/tag/HHVM-3.8.0
来自:开源中国社区
