array(3) {
  [0]=>
  int(2)
  [1]=>
  &array(3) {
    [0]=>
    int(2)
    [1]=>
    *RECURSION*
    [2]=>
    *RECURSION*
  }
  [2]=>
  &array(3) {
    [0]=>
    int(2)
    [1]=>
    *RECURSION*
    [2]=>
    *RECURSION*
  }
}