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2005 Aurelien 1 
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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 * CodeIgniter
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 *
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 * An open source application development framework for PHP 4.3.2 or newer
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 *
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 * @package		CodeIgniter
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 * @author		ExpressionEngine Dev Team
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 * @copyright	Copyright (c) 2008, EllisLab, Inc.
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 * @license		http://codeigniter.com/user_guide/license.html
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 * @link		http://codeigniter.com
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 * @since		Version 1.0
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 * @filesource
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 */
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// ------------------------------------------------------------------------
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/**
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 * CodeIgniter Download Helpers
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 *
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 * @package		CodeIgniter
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 * @subpackage	Helpers
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 * @category	Helpers
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 * @author		ExpressionEngine Dev Team
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 * @link		http://codeigniter.com/user_guide/helpers/download_helper.html
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 */
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// ------------------------------------------------------------------------
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/**
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 * Force Download
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 *
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 * Generates headers that force a download to happen
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 *
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 * @access	public
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 * @param	string	filename
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 * @param	mixed	the data to be downloaded
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 * @return	void
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 */
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if ( ! function_exists('force_download'))
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{
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	function force_download($filename = '', $data = '')
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	{
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		if ($filename == '' OR $data == '')
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		{
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			return FALSE;
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		}
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		// Try to determine if the filename includes a file extension.
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		// We need it in order to set the MIME type
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		if (FALSE === strpos($filename, '.'))
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		{
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			return FALSE;
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		}
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		// Grab the file extension
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		$x = explode('.', $filename);
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		$extension = end($x);
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		// Load the mime types
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		@include(APPPATH.'config/mimes'.EXT);
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		// Set a default mime if we can't find it
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		if ( ! isset($mimes[$extension]))
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		{
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			$mime = 'application/octet-stream';
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		}
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		else
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		{
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			$mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];
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		}
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		// Generate the server headers
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		if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE"))
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		{
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			header('Content-Type: "'.$mime.'"');
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			header('Content-Disposition: attachment; filename="'.$filename.'"');
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			header('Expires: 0');
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			header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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			header("Content-Transfer-Encoding: binary");
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			header('Pragma: public');
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			header("Content-Length: ".strlen($data));
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		}
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		else
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		{
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			header('Content-Type: "'.$mime.'"');
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			header('Content-Disposition: attachment; filename="'.$filename.'"');
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			header("Content-Transfer-Encoding: binary");
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			header('Expires: 0');
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			header('Pragma: no-cache');
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			header("Content-Length: ".strlen($data));
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		}
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		exit($data);
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	}
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}
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/* End of file download_helper.php */
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/* Location: ./system/helpers/download_helper.php */