php://在url上找到输入

I am running my website under IIS with asp.net as my language.

errors encountered in my site are sent to me via email when I found something containing php://input like MySite/Page?id=php://input

my questions are, what does php://input do? can php queries be executed on IIS Servers?

Thanks for your answers and time

This looks most likely like an automated hacking attempt looking for injection vulnerabilities of a PHP application. Nothing you need to be concerned of with ASP.net. Basically PHP allows some URLs in file names. So the idea of the hack is to use one of those URLs to see if the input strings are used unvalidated.