[R] Can R be embedded in html?

[chawla]

Hi
I have previously used PHP script in HTML to connect website with the 
database and do analysis.
Is it also possible to execute R scripts within HTML files?
Basically I want to create an application where user can input data such 
as gene list and their expression values, which can be processed by R 
and result be displayed or made available for download.
If there is some guide on how to do this please give the link.
Thanks
Konika