php http://php.net/docs.php
python https://www.python.org/doc/versions/
lua http://www.lua.org/manual/
java https://docs.oracle.com/javase/7/docs/
vc++ https://msdn.microsoft.com/zh-cn/library/cscc687y(v=vs.100).aspx
vc https://msdn.microsoft.com/zh-cn/library/634ca0c2(v=vs.100).aspx
linux man http://man7.org/linux/man-pages/index.html
c++ http://www.cplusplus.com/reference/