How does ArrayAccess work?

Question

I read about commonly used PHP interfaces from SPL, such as Iterator, Countableand ArrayAccess. However, I do not understand how they work.

Do their implementations affect the basic functionality of PHP, for example, overloading the array operator []?

I also read about the Operator extension, which provides the ability to overload other operators in the same way as lower-level languages. Since the Operator extension explicitly modifies the PHP core, I was wondering how it ArrayAccessworks the same way as behind the scenes?

I'm a thief, so it's hard for me to use something without knowing what's under the hood.

Answer 1

PHP PHP Zend Engine. Zend Engine (PHP-) , , PHP.

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Countable - , SPL; Zend Engine . , count count, .

. Zend Engine ( , , ZEND_ASSIGN_ADD , / PHP, ).