Large File Downloads Issue Solved

//From: http://codeigniter.com/forums/viewthread/109798/

//CONTROLLER
// DOWNLOAD FILE
function download() {
 // LOAD FILE SIZE PLUGIN
 $this->load->plugin('filesize');
 // GRAB FILE NAME
 $file_name = $this->uri->segment(3);
 // SET DIRECT PATH TO FILE
 $file_path = "securefiles/".$file_namee;
 // GRAB THE FILE SIZE
 $file_size = get_filesize($file_path);
 // CHOOSE WHICH DOWNLOAD METHOD BASED FILE SIZE
 if ($file_size >= 45) {
  // BEGIN DOWNLOAD
  force_download($file_name, $file_path, 'large');
 } else {
  // READ FILE CONTENTS
  $file_data = file_get_contents("securefiles/".$file_name);
  // BEGIN DOWNLOAD
  force_download($file_name, $file_data, 'small');
 }
}

//DOWNLOAD HELPER PORTION MODIFIED
//Added Parameter: $type - Line 44
function force_download($filename = '', $data = '', $type = '')
//Added IF / ELSE statement - Line 75
// Generate the server headers
if ($type == 'small')
{
 if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE"))
 {
  header('Content-Type: "'.$mime.'"');
  header('Content-Disposition: attachment; filename="'.$filename.'"');
  header('Expires: 0');
  header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  header("Content-Transfer-Encoding: binary");
  header('Pragma: public');
  header("Content-Length: ".strlen($data));
 }
 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: ".strlen($data));
 }
} else {
 if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE"))
 {
  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: ".strlen($data));
  readfile($data);
 }
 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: ".strlen($data));
  readfile($data);
 }
} 
?>