Console app to Web services with Mono

Question

Hello folks,

I'm not a professional developer, I prefer to say this right away :)

I have made a console app in C# that runs on a Linux webserver using Mono.

Now, I'd like to develop a web interface to allow users to interact with the application.

After some intensive googling, I got that Web Services is the way to go to make it happen.

Our linux webserver has not ASP.NET installed tho, it uses Apache with some PHP module (I'm not the web admin, and once again, I know little about it :P).

My question is this : would I still be able to develop a web service for my console app, and have that web service accessible through our website (everything hosted on that linux webserver, with PHP) ? And if yes, how ?

I'm not expecting to get a full tuto, but if you could point me to the right directions (links, documentations, etc ...), that would be very nice :)

Thanks.