You can automatically translate a small subset of PHP into C# using the transpiler
library for SWI-Prolog. This is a short program that uses this library:
:- use_module(library(transpiler)).
:- set_prolog_flag(double_quotes,chars).
:- initialization(main).
main :-
Input = "function add($a,$b){return $a.$b;}function squared($a){return $a*$a;}function add_exclamation_point($parameter){return $parameter.\"!\";}",
translate(Input,'php','c#',X),
atom_chars(Y,X),
writeln(Y).
This is the program's output in C#:
public static string add(string a,string b){
return a+b;
}
public static int squared(int a){
return a*a;
}
public static string add_exclamation_point(string parameter){
return parameter+"!";
}