Does PHP have built-in data structures?

Question

I\'m looking at the PHP Manual, and I\'m not seeing a section on data structures that most languages have, such as lists and sets. Am I just blind or does PHP not have anything

Answer 1

As for today (PHP 7.4), only native structure is an array. But from PHP7 extension DS appeared that includes new data structures and all of them are much faster than other implementations (including SPL recommended in accepted answer).

DS extension - PHP Manual

Interfaces: Collection, Hashable, Sequence

Classes: Vector, Deque, Map, Pair, Set, Stack, Queue, PriorityQueue

Orginal article about extension