I am trying to install PHP using the Web Platform Installer on IIS, for testing purposes only.
I followed all the instructions on the microsoft website and when I try to test it by trying to load php file containing this

it shows this error:

HTTP Error 500.21 - Internal Server ErrorHandler "PHP55_via_FastCGI" has a bad module "FastCgiModule" in its module listI think its something to do with Handler Mappings but everything seems in place and I don't understand why this isn't working.

Check Solution