PHP, SPL, AccessArray Interface with Iterator Interface

Question

我在考虑AccessArray接口和Iterator接口，我在考虑可以将它们组合吗？，我的意思是使用AccessArray设置数组并与Iterator一起使用foreach循环，如果可以的话请帮我举个例子那两个。

Answer 1

class Foo implements ArrayAccess, Iterator {
  // Implement interfaces here
}

You can implement as many interfaces as you like.

Answer 2

Note that you are basically asking for ArrayObject .

class Foo extends ArrayObject
{
  private $data = [];
  public function __construct()
  {
    parent::__construct($this->data);
  }
}