Converts the deque to an array.
Note:
Casting to an array is not supported yet.
此函数没有参数。
An array containing all the values in the same order as the deque.
Example #1 Ds\Deque::toArray() example
<?php
$deque = new \Ds\Deque([1, 2, 3]);
var_dump($deque->toArray());
?>
以上例程的输出类似于:
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}