HHVM:替代PHP環境的伺服器建站工具是由Facebook團隊開發的一套強大的可以用於替代PHP的建站環境包，它是一個PHP的JIT(Just-In- Time)編譯器，同時具有產生快速程式碼和即時編譯的優點。實踐證明HHVM可以明顯地提升PHP執行速度，節省大量的伺服器資源。

【HHVM介紹】

HHVM單獨安裝的話比較簡單，官方也針對各種個作業系統推出了詳細的說明文件，一般按照文件的說明就可以安裝成功，HHVM主要是用於替換PHP，平常的LNMP即Linux、Nginx、MysqL、PHP架構被替換為LNMH(H即為HHVM)。

HHVM環境包支援Debian7 x64、CentOS 6.5 (64-bit)、 Ubuntu 12.04 上搭建HHvm Apache 2.4 Nginx建站環境，同時安裝和執行Wordpress部落格程式，HHvm強大的效能提升能力可以最大限度地提升Wordpress執行效率，節省伺服器費用。

這裡分享一份HHVM環境的伺服器架設教程:HHVM+Wordpress

HHVM is an open-source virtual machine designed for executing programs written in Hackand PHP. HHVM uses a just-in-time (JIT) compilation approach to achieve superior performance while maintaining the development flexibility that PHP provides.

HHVM runs much of the world’s existing PHP. Developers and hosts are adopting HHVM. We are aware of minor incompatibilities (please open issues when you find them), but we can run the top 20 Github PHP frameworks out of the box. The HHVM team, along with many wonderful community members, has made it a stated, high priority goal to run all existing PHP code existing out in the wild.