HHVM 3.8.1 发布，更新内容如下： - Remove global LDAP requirement - Don't require libXSLT globally - Remove the global MCrypt requirement - Remove the global search for LibUODBC - Remove the global check for libpam - use folly::writeFull wrapper for uploads - Fix vararg handling for array_uintersect and others - fix error message for abstract type constants - Fix variadics in hhvm_get_frame_args - Use poll() instead of select() in XDebugServer::createSocket. - [hack] Error on overriding concrete type constant with an abstract one - [hack] Grow shapes more correctly - Array pointer modification functions (next, current, each etc) can be used on ArrayObject - Eliminate ext_mbstring's dependence on ext_process - Eliminate ext_mail's dependence on ext_process - Use utf8 string literals in zend-html - Don't allow abstract memoized methods - [hack] Properly handle 'this' type for methods - Fix lexing of "${fn()}" - Fix lexing of #<?php - [hack] Fix infinite loop in syntax error when closing a namespace - Fix mispelling of COOKIE. - Deal with self, static and parent constructors 下载：https://github.com/facebook/hhvm/archive/HHVM-3.8.1.zip。 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。 Facebook表示，HHVM将替代HPHPi，用于所有的PHP执行。根据 Facebook透漏，HHVM在速度方面获得了显著改进，比目前使用的PHP解释器快60%，而使用内存减少90%。 Facebook于12年十二月初发布了一个博文，宣布他们的解释型PHP运行环境HHVM（HipHop VM）已经达到甚至超过了编译型PHP运行环境HipHop的运行速度。 HHVM 3.8.1 发布，执行 PHP 代码的虚拟机下载地址
