playingWithTehIterator.php

<?php

class controller
{
	private $container = null;

	public function __construct()
	{
		$this->container = new container();

		// Fill
		for ($cnt = 1; $cnt < 6; ++$cnt)
		{
			$this->container->addNode("Node{$cnt}");
		}
		for ($cnt = 7; $cnt < 10; ++$cnt)
		{
			$nc = $this->container->addContainer();
			for ($cnt2 = 0; $cnt2 < 3; ++$cnt2)
			{
				$nc->addNode("SubContainer{$cnt}::Node{$cnt2}");

				if ($cnt2 == 2)
				{
					$nc2 = $nc->addContainer();
					$nc2->addNode("SubContainer{$cnt}::SubSubContainer1::Node");
				}
			}
		}
	}

	public function getIterator()
	{
		return new RecursiveIteratorIterator($this->container);
	}
}

class container implements RecursiveIterator
{
	private $data = array();

	public function addNode($name)
	{
		$this->data[] = new node($name);
	}
	
	public function addContainer()
	{
		$nc = new container();
		$this->data[] = $nc;
		return $nc;
	}

	//-- Iterator implementation
	private $pos = 0;

	public function hasChildren()
	{
		print("\t::\t" . __METHOD__ . "\n");
		return ($this->data[$this->pos] instanceof container) ? true : false;
	}

	public function getChildren()
	{
		print("\t::\t" . __METHOD__ . "\n");
		return $this->data[$this->pos];
	}

	public function current()
	{
		print("\t::\t" . __METHOD__ . "\n");
		return $this->data[$this->pos];
	}

	public function key()
	{
		print("\t::\t" . __METHOD__ . "\n");
		return $this->pos;
	}

	public function next()
	{
		print("\t::\t" . __METHOD__ . "\n");
		++$this->pos;
	}

	public function rewind()
	{
		print("\t::\t" . __METHOD__ . "\n");
		$this->pos = 0;
	}

	public function valid()
	{
		return isset($this->data[$this->pos]);
	}
}

class node
{
	private $name = '';

	public function __construct($name, $subNodes = false)
	{
		$this->name = $name;
	}

	public function getName()
	{
		return $this->name;
	}
}

$c = new controller();
$iterator = $c->getIterator();

foreach ($iterator as $i)
{
	var_dump($i->getName());
}