for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
/**
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
declare(strict_types=1);
namespace loophp\phptree\Traverser;
use loophp\phptree\Node\NodeInterface;
use Traversable;
* Class PreOrder.
class PreOrder implements TraverserInterface
{
* @var int
private $index = 0;
public function traverse(NodeInterface $node): Traversable
$this->index = 0;
return $this->doTraverse($node);
}
* @return Traversable<NodeInterface>
private function doTraverse(NodeInterface $node): Traversable
yield $this->index => $node;
foreach ($node->children() as $child) {
++$this->index;
yield from $this->doTraverse($child);
loophp /
phptree
