Wich one, c# or php?

Hi, I am on my way to a programming course, wich is 2 main modules. The first is html, css and javascript, after that i have to make a dissicion between c#, php or java. I am a senior graphic designer and one of the teacher said maybe php is better with my background. My main interest was c# with .net. they are both really different from what i have looked up. I recently finished a precourse, programming logic with blockly, and to me c# seems to make more sens to me. What your guys two cents on this please?