<?php

/**
 * Just added as comment to php documentation
 * http://us3.php.net/manual/en/countable.count.php
 */
class Foo implements Countable
{
    public function count()
    {
        dump(func_get_args());
        return 1;
    }
}

// recursive parameter doesn't affect Countable
echo count(new Foo(), COUNT_RECURSIVE);


^ []

1

• SplHeapTop ordered Heap
• Create a queue with value-priorities
• Access data of Traversable with IteratorIterator

PHP 8.2, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8