<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/*** Force Download** Generates headers that force a download to happen** @access    public* @param    string    filename* @param    mixed    the data to be downloaded* @return    void*/
if ( ! function_exists('force_download'))
{function force_download($filename = '', $file = ''){if ($filename == '' OR $file == ''){return FALSE;}// Try to determine if the filename includes a file extension.// We need it in order to set the MIME typeif (FALSE === strpos($filename, '.')){return FALSE;}// Grab the file extension$x = explode('.', $filename);$extension = end($x);// Load the mime typesif (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php')){include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php');}elseif (is_file(APPPATH.'config/mimes.php')){include(APPPATH.'config/mimes.php');}// Set a default mime if we can't find itif ( ! isset($mimes[$extension])){$mime = 'application/octet-stream';}else{$mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];}// Generate the server headersif (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE){header('Content-Type: "'.$mime.'"');header('Content-Disposition: attachment; filename="'.$filename.'"');header('Expires: 0');header('Cache-Control: must-revalidate, post-check=0, pre-check=0');header("Content-Transfer-Encoding: binary");header('Pragma: public');header("Content-Length: ".filesize($file));}else{header('Content-Type: "'.$mime.'"');header('Content-Disposition: attachment; filename="'.$filename.'"');header("Content-Transfer-Encoding: binary");header('Expires: 0');header('Pragma: no-cache');header("Content-Length: ".filesize($file));}readfile_chunked($file);die;}
}/*** readfile_chunked** Reads file in chunks so big downloads are possible without changing PHP.INI** @access    public* @param    string    file* @param    boolean    return bytes of file* @return    void*/
if ( ! function_exists('readfile_chunked'))
{function readfile_chunked($file, $retbytes=TRUE){$chunksize = 1 * (1024 * 1024);$buffer = '';$cnt =0;$handle = fopen($file, 'r');if ($handle === FALSE){return FALSE;}while (!feof($handle)){$buffer = fread($handle, $chunksize);echo $buffer;ob_flush();flush();if ($retbytes){$cnt += strlen($buffer);}}$status = fclose($handle);if ($retbytes AND $status){return $cnt;}return $status;}
}/* End of file MY_download_helper.php */
/* Location: ./application/helpers/MY_download_helper.php */