介绍：Windows Cache Extension for PHP is a PHP accelerator that is used to increase the speed of PHP applications running on Windows and Windows Server. Once the Windows Cache Extension for PHP is enabled and loaded by the PHP engine, PHP applications can take advantage of the functionality without any code modifications.
下载：http://www.iis.net/download 点Install图标即可
问题：安装后网站发现部分PHP执行出现源码，
解决：查了许久终于发现终于发现需要进入php安装目录，
将 php.ini 文件中的 short_open_tag = off 改为 short_open_tag = on，问题解决