autoload.php

<?php
/*
* This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license,
* visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
*/

class Autoload
{
	static public function init($className)
	{
		if(strrpos($className, "Controller") !== false)
			self::controllers($className);
		elseif(strrpos($className, ".class") !== false)
			self::helpers($className);
		elseif(strrpos($className, "Model") !== false)
			self::models($className);
		elseif(strrpos($className, "Renderer") !== false)
			self::lib($className);
		elseif(strrpos($className, "Functions") !== false)
			self::lib($className);
		elseif(strrpos($className, "Validation") !== false)
			self::lib($className);
	}
	
	static public function controllers($className)
	{
		if(file_exists(SITE_PATH."controller/".$className.".php"))
			require_once SITE_PATH."controller/".$className.".php";
	}
	
	static public function classes($className)
	{
		if(file_exists(SITE_PATH."helpers/".$className.".class.php"))
			require_once SITE_PATH."helpers/".$className.".class.php";
	}
	
	static public function helpers($className)
	{
		if(file_exists(SITE_PATH."helpers/".$className.".php"))
			require_once SITE_PATH."helpers/".$className.".php";
	}
	
	static public function lib($className)
	{
		if(file_exists(SITE_PATH."lib/".$className.".php"))
			require_once SITE_PATH."lib/".$className.".php";
	}
	
	static public function models($className)
	{
		if(file_exists(SITE_PATH."model/".$className.".php"))
			require_once SITE_PATH."model/".$className.".php";
	}
}

spl_autoload_register(array('Autoload', 'init'));
spl_autoload_register(array('Autoload', 'classes'));
spl_autoload_register(array('Autoload', 'controllers'));
spl_autoload_register(array('Autoload', 'lib'));
spl_autoload_register(array('Autoload', 'helpers'));
spl_autoload_register(array('Autoload', 'models'));