Question

How can I declare the bellow function in the global space?

namespace something\else;

function example() {
  #some code here
}

Answer 1

From the PHP document:

To combine global non-namespaced code with namespaced code, only bracketed syntax is supported.

So if you have full control to the PHP file, try

namespace Something {
    function example() {
    }
}
namespace {
    function example() {
    }
}