array(6) {
  [0]=>
  string(13) "Hello World 
"
  [1]=>
  string(11) "Hello World"
  [2]=>
  int(1000)
  [3]=>
  float(0.0204)
  [4]=>
  array(8) {
    [0]=>
    int(0)
    [1]=>
    int(1)
    [2]=>
    int(2)
    [3]=>
    int(3)
    [4]=>
    int(4)
    [5]=>
    int(5)
    [6]=>
    int(6)
    [7]=>
    int(7)
  }
  [5]=>
  array(4) {
    [0]=>
    string(1) "a"
    [1]=>
    string(1) "b"
    [2]=>
    string(1) "c"
    [3]=>
    string(1) "d"
  }
}