Log:
-----
Array
(
    [1] => 
    [2] => 
    [3] => Array
        (
        )

    [4] => 
    [5] => Array
        (
        )

)

-----
array(5) {
  [1]=>
  string(0) ""
  [2]=>
  NULL
  [3]=>
  array(0) {
  }
  [4]=>
  NULL
  [5]=>
  array(0) {
  }
}