Pidgin下的qq和飞信插件源代码，其中飞信的使用php语言写的，可以用来研究sip协议-Source code of the Fetion and QQ in the Pidgin. Fetion is programed with the php language, which would be a good tool to do research about sip protocol

解析获取优酷视频真实下载地址的PHP源代码- 解析获取优酷视频真实下载地址的PHP源代码 Analysis to obtain the PHP source code for the real download address of Youku Video