Autoloader.php

class Autoloader
{	
	public static $paths = array();

	public static $files = array();
	
	public static function register() {
		spl_autoload_register(array(__CLASS__, 'load'));
	}
	
	public static function unregister() {
		spl_autoload_unregister(array(__CLASS__, 'load'));
	}

	public static function path($paths) {
		if (!is_array($paths)) {
			$paths = array($paths);
		}

		foreach ($paths as $path) {
			static::$paths[] = rtrim(realpath($path), DIR_SEP).DIR_SEP;
		}
	}

	private static function load($class) {
		$file = (false !== strpos($class, '\\')) ? strtolower(str_replace('\\', DIR_SEP, $class)) : $class;

		foreach (static::$paths as $path) {
			static::loadSingle($path.$file.'.php');
		}
	}
	
	public static function loadSingle($file, $extract = null) {
		if ($extract) {
			extract($extract);
		}

		if (is_readable($file)) {
			return require static::$files[] = $file;
		}
	}
}