How can PHP code be ported to .NET, and what potential issues or changes may arise during the process?

Porting PHP code to .NET can be done by rewriting the PHP code in C# or VB.NET. This process involves understanding the logic and functionality of the PHP code and translating it into the equivalent syntax in .NET. Potential issues that may arise during the process include differences in language syntax, data types, and built-in functions between PHP and .NET.

// PHP code
function helloWorld() {
    echo "Hello, World!";
}

helloWorld();
```

To port this PHP code to .NET, you would rewrite it in C# as follows:

```csharp
// C# code
using System;

class Program
{
    static void Main()
    {
        HelloWord();
    }

    static void HelloWord()
    {
        Console.WriteLine("Hello, World!");
    }
}