オブジェクトの配列化<br>
object(Test)#1 (4) {
  ["B":"Test":private]=>
  NULL
  ["C":protected]=>
  NULL
  ["D"]=>
  NULL
  ["1"]=>
  NULL
}
Test::__set_state(array(
   'B' => NULL,
   'C' => NULL,
   'D' => NULL,
   '1' => NULL,
))array(4) {
  [" Test B"]=>
  NULL
  [" * C"]=>
  NULL
  ["D"]=>
  NULL
  [1]=>
  NULL
}
array (
  '' . "\0" . 'Test' . "\0" . 'B' => NULL,
  '' . "\0" . '*' . "\0" . 'C' => NULL,
  'D' => NULL,
  1 => NULL,
)