dirToArray.php

<?php

function dirToArray($path, $dir = '')
{
	$path = (!empty($path)) ? rtrim($path, '/') . '/' : $path;
	$dir = (!empty($dir)) ? rtrim($dir, '/') . '/' : $dir;
	$path = $path . $dir;
	$list = array();

	$d = dir($path);
	while (false !== ($entry = $d->read()))
	{
		$file = new SplFileInfo($path . $entry);
		if (substr($file->getFilename(), 0, 1) == '.')
		{
			continue;
		}

		if ($file->isDir())
		{
			if (empty($list[$file->getFilename()]))
			{
				$list[$file->getFilename()] = array();
			}
			$list[$file->getFilename()] = &dirToArray($path, $file->getFilename());
		}
		else
		{
			$list[] = $file->getFilename();
		}
	}

	return $list;
}

dirToTree.php

<?php

class tree
{
	private $t;
	
	public function __construct($path)
	{
		$this->t = new dirNode(new SplFileInfo($path));
		$this->build($path);
	}

	public function build($path = '', $dir = '', node $node = null)
	{
		$path = (!empty($path)) ? rtrim($path, '/') . '/' : $path;
		$dir = (!empty($dir)) ? rtrim($dir, '/') . '/' : $dir;
		$node = (is_null($node)) ? $this->t : $node;
		$path = $path . $dir;

		$d = dir($path);
		while (false !== ($entry = $d->read()))
		{
			$file = new SplFileInfo($path . $entry);
			if (substr($file->getFilename(), 0, 1) == '.')
			{
				continue;
			}
	
			if ($file->isDir())
			{
				$n = new dirNode($file);
				$node->addNode($this->build($path, $file->getFilename(), $n));
			}
			else
			{
				$node->addNode(new fileNode($file));
			}
		}
		
		return $node;
	}
}

interface node
{
}

class nodeBase implements node
{
}

class fileNode extends nodeBase
{
	protected $file;
	public function __construct(SplFileInfo $file)
	{
		$this->file = $file;
	}
}

class dirNode extends nodeBase
{
	protected $dir;
	protected $children;
	public function __construct(SplFileInfo $dir)
	{
		$this->dir = $dir;
	}
	
	public function addNode(node $node)
	{
		$this->children[] = $node;
	}
}