Helpers

More specifics are always helpful if you want the problem to get fixed.

Are you seeing errors, the file not loading, etc?

helper('bnc'); //bnc.php is in Helper folder and contains the function states()
print "<pre>" . print_r(states(), TRUE) . "</pre>";

When I call the function I get 'Call to undefined function App\Controllers\states()'

Simpler is always better