100 行
无行尾
2.5 KiB
PHP
100 行
无行尾
2.5 KiB
PHP
<?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 5.1.6 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 - 2011, 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 (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE)
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{
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header('Content-Type: "'.$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 */ |