Light autoloader

autoload.php

<?php
/**
 * Autoloader class
 * @author Thomas Collot
 */
 
namespace Light\App;
 
class Autoload
{
    /**
     * Register the autoloader
     */
    public function register()
    {
        spl_autoload_register(array(__CLASS__, 'autoload'));
    }
 
    /**
     * Light Autoload
     */
    private function autoload($class)
    {
        $class = ltrim($class, '\\');
        $fileName  = '';
        $namespace = '';
 
        if ($lastNsPos = strripos($class, '\\')) {
            $namespace = substr($class, 0, $lastNsPos);
            $class = substr($class, $lastNsPos + 1);
            $fileName = strtolower(str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR);
        }
 
        $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';
        $fileName = strtolower(substr($fileName, 6));
 
        require_once '../' . $fileName;
    }
}