3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Node implements Countable { private $nodes = []; public function __construct(array $nodes = []) { $this->nodes = $nodes; } public function getCount() { return count($this->nodes); } public function getCountRecursive() { $count = 0; foreach ($this->nodes as $node) { $count += ($node->getCountRecursive() + 1); } return $count; } public function count($mode) { if ($mode === COUNT_RECURSIVE) { return $this->getCountRecursive(); } return $this->getCount(); } } $node = new Node([ new Node([ new Node([ new Node([ new Node(), new Node(), new Node(), ]), new Node(), new Node(), ]), new Node(), new Node(), ]), new Node(), ]); var_dump(count($node), count($node, COUNT_RECURSIVE));

preferences:
39.07 ms | 402 KiB | 5 Q