hhvm/hphp/test/quick/SPropW.php.expect

array(1) {
  [0]=>
  array(1) {
    [0]=>
    array(1) {
      [0]=>
      array(1) {
        [0]=>
        array(1) {
          [0]=>
          int(1)
        }
      }
    }
  }
}
int(1)
array(2) {
  [0]=>
  array(1) {
    [0]=>
    array(1) {
      [0]=>
      array(1) {
        [0]=>
        array(1) {
          [0]=>
          int(1)
        }
      }
    }
  }
  [1]=>
  array(1) {
    [0]=>
    NULL
  }
}