index.php

<?php
	error_reporting(E_ALL);
	$system_folder = "system";
	$application_folder = "application";
	if (strpos($system_folder, '/') === FALSE)
	{
		if (function_exists('realpath') AND @realpath(dirname(__FILE__)) !== FALSE)
		{
			$system_folder = realpath(dirname(__FILE__)).'/'.$system_folder;
		}
	}
	else
	{
		// Swap directory separators to Unix style for consistency
		$system_folder = str_replace("\\", "/", $system_folder); 
	}
	define('EXT', '.php');
	define('SELF', pathinfo(__FILE__, PATHINFO_BASENAME));
	define('FCPATH', str_replace(SELF, '', __FILE__));
	define('BASEPATH', $system_folder.'/');
	if (is_dir($application_folder))
	{
		define('APPPATH', $application_folder.'/');
	}
	else
	{
		if ($application_folder == '')
		{
			$application_folder = 'application';
		}

		define('APPPATH', BASEPATH.$application_folder.'/');
	}
	require_once BASEPATH.'codeigniter/CodeIgniter'.EXT;