目前HipHop还是试验性质的，据说FaceBook用它用了一年多了，很稳定，但是毕竟它本身就是做出来给facebook用的。还是非常的希望它能继续发展，能解决php作为脚本语言上的众多劣势！

HipHop的介绍

HipHop for PHP transforms PHP source code into highly optimized C++. It was developed by Facebook and was released as open source in early 2010.
HipHop transforms your PHP source code into highly optimized C++ and then compiles it with g++ to build binary files. You keep coding in simpler PHP, then HipHop executes your source code in a semantically equivalent manner and sacrifices some rarely used features – such as eval() – in exchange for improved performance.
Facebook sees about a 50% reduction in CPU usage when serving equal amounts of Web traffic when compared to Apache and PHP. Facebook’s API tier can serve twice the traffic using 30% less CPU.
Why HipHop
One of the explicit design goals leading into HipHop was the ability to continue writing complex logic directly within PHP. Companies with large PHP codebases will generally rewrite their complex functionality directly as PHP extensions in either C or C++. Doing so ends up reducing the number of people who are able to work on the company’s entire codebase. By keeping this logic in PHP, Facebook is able to move fast and maintain a high number of engineers who are able to work across the entire codebase.
HipHop is not the right solution for everyone deploying PHP. We think it will be useful to companies running very large PHP infrastructures who do not wish to rewrite complex logic within C or C++.

Using HipHopcheckout and build instructionsgit clone git://github.com/facebook/hiphop-php.gitHipHop currently supports PHP version 5.2 and will be updated to support 5.3. The software is open source and we hope that it’s useful to many companies around the World.You can learn more on Building and installing or Building and installing on Ubuntu 9.10. See Running HipHop to learn more about compiling your source code.
Discussion and supportYou can discuss HipHop for PHP and report bugs on the HipHop developer mailing list (or feel free to submit a Pull Request).The wiki content is licensed under Creative Commons Attribution-ShareAlike License
上面是Facebook上的资料，可能国内上不了 facebook，想要资料先翻墙吧~~

http://wiki.github.com/facebook/hiphop-php/

http://xpad.sinaapp.com/

目前已完成文档上传、文档本地保存、登陆这几个主要功能

接着要完成的功能：打开网上文档，编辑或删除操作，添加注册功能，打开本地文档，自动记录最新的10个本地文档位置，快速打开。

放的API
API编码：UTF-8
数据格式：JSON

登陆
http://xpad.sinaapp.com/index.php?m=api&a=login
数据提交模式：post （u为用户名，p为密码）
返回值 json格式{"status":0,"msg":"\u767b\u9646\u8d85…"} status为状态，1为登陆成功，写入session,0为登陆失败msg为出错信息

保存文档
http://xpad.sinaapp.com/index.php?m=api&a=save
数据提交模式：post （content为文档内容）
返回值 json格式{"status":0,"msg":"\u767b\u9646\u8d85…"} status为状态，status为1发布成功，写入session,status为0发布失败msg为出错信息，status为2，表示上文档没有改变

工作的流程是：

xpad客户端采用c#开发

xpad便利贴程序开机最小化启动，右下角显示ico程序图标

当双击右下角xpad图标启动便利贴程序，可以方便的进行记事、编辑操作

当记录结束时，点文件=》保存或是按下ctrl+s保存，或是每隔一段时间进行自动保存

xpad服务端采用新浪云计算平台 php开发

当xpad保存文档时，客户端能过类似web service方式与服务端通讯，提交数据。服务端则加密保存数据库中。

同样，当xpad点击打开文档时，自动从服务端读取已保存的文档日期及摘要，以供打开编辑

目前完成的工作：

xpad客户端界面及最小化右下角图标运行

把常用的原创框架移值到新浪云计算平台

主要的功能：

会员注册、客户端进行登陆、客户端操作便利贴、在web中进行便利贴的操作、开放api、准备开放手机端(android)

网址：http://ye55.sinaapp.com/

 修改以下主要部：

memcache内存缓存部分

mysql以前用的是pdo，现在兼容sea_mysql

去掉不支持的函数

。。。。

下载安装jdk  android_sdk eclipse 这些都正常

但有一点，希望大家不要走弯路了，最后一步，新建avd虚拟机时，请不要在eclipse里进行新建，一定会出错。

需要在cmd里新建，并且注意指定路径，不指定avd路径也一样出错

命令是 本人android sdk安装在d盘

d:

cd android_sdk/tools

注意,先确定你要的版本，target是多少，本人的机器上target1为android 1.5

android create avd -n G3 -t 1 -p D:/g3

到这里，就正常了，折腾了一天了。