[Novo]

The error I've found is that if you want to use the var in array, the array needs to be a variable defined in the function itself; not a returned value from a function. ( I also highly suspect that someArray()[2] doesn't work. )

PHP Code:

function someArray() {
  return {0,1,2,3};
}

function onCreated() {
  if ( 2 in someArray() ) {
    echo("Works!");
  } else {
    echo("Doesn't work.");
  }
}