Laravel Menu Generator

menu.php

<?php
	class Menu {
		public static $menus = array();

		public static function render($name)
		{
			return self::$menus[$name];
		}

		public static function register($name, Array $menu, $params = array())
		{
			$implode = function($glue, $separator, $array)
			{
				if(! is_array($array)) 
				{
					return $array;
				}

				$string = array();

				foreach($array AS $key => $val)
				{
					if(is_array($val))
					{
						$val = implode(' ', $val);
					}

					$string[] = ' ' . $key . $glue . $val . $separator;
				}

				return implode($separator, $string);
			};

			$build = function($input, $options = array(), $html = '', $level = 1) use (&$build, $implode)
			{
				$html = $html ?: '';

				if($level < 2) {
					$options = array_merge_recursive(array(
						'list_tag' => 'ul',
						'item_tag' => 'li',
						'after_link_with_children' => ' <b class="caret"></b>',
						'attributes' => array(
							'list' => array('class' => array('nav')),
							'list_sub' => array('class' => 'dropdown-menu'),
							'item' => array(),
							'item_with_children' => array('class' => 'dropdown'),
							'item_active' => array('class' => 'active'),
							'item_parent_active' => array('class' => 'active'),
							'link_with_children' => array('class' => 'dropdown-toggle', 'data-toggle' => 'dropdown')
						)
					), $options);
				}

				$html .= '<' . $options['list_tag'] . $implode('="', '"', $options['attributes'][$level == 1 ? 'list' : 'list_sub']) . '>';

				foreach($input AS $item)
				{
					$children = false;
					$item_active = false;

					@ list($name, $link, $children) = $item;

					if(preg_match('%^' . preg_quote($link) . '$%', URI::current(), $m))
					{
						$item_active = true;
					}

					if(count($children))
					{
						$html .= '<' . $options['item_tag'] . $implode('="', '"', $options['attributes']['item_with_children']) . '>';
						$html .= '<a href="' . URL::to($link) . '"' . $implode('="', '"', $options['attributes']['link_with_children']) . '>' . $name . $options['after_link_with_children'] . '</a>';
						$html .= $build($children, $options, '', ++$level);
						--$level;
					}
					else
					{
						$html .= '<' . $options['item_tag'] . $implode('="', '"', $options['attributes']['item'] + ($item_active ? $options['attributes']['item_active'] : array())) . '>';
						$html .= HTML::link($link, $name);
					}

					$html .= '</' . $options['item_tag'] . '>';
				}

				$html .= '</' . $options['list_tag'] . '>';

				return $html;
			};

			self::$menus[$name] = $build($menu, $params);

			return new self;
		}
	}

start.php

<?php
	Autoloader::map(array(
		'Menu' => __DIR__ . DS . 'menu' . EXT,
	));