If value is null {}

If a value is not set or null...

[JAB Creations]

The last else statement needs to work if no value or the value of null is found. How do I implement this correctly?

if ($theme = "classic")
{
document.writeln('classic');
}

else ($theme = "matrix")
{
document.writeln('matrix');
}

else ($theme = "null")
{
document.writeln('null');
}

[JAB Creations]

I get to answer my own question, gotta love that...

elseif ($theme == null) {}