CodeIgniter 底下提供了
force_download 函數,讓使用者可以直接下載檔案,但是會遇到中文的問題,
IE 底下開起來檔名會是亂碼,force_download(‘filename’, ‘data’) 如果 filename 使用中文,測試
FireFox 跟
Chrome 都是沒問題的,唯獨 IE 開起來就是有問題,所以麻煩請修改
helpers/download_helper.php 這隻程式。
if ( ! function_exists('force_download'))
{
function force_download($filename = '', $data = '')
{
if ($filename == '' OR $data == '')
{
return FALSE;
}
// Try to determine if the filename includes a file extension.
// We need it in order to set the MIME type
if (FALSE === strpos($filename, '.'))
{
return FALSE;
}
// Grab the file extension
$x = explode('.', $filename);
$extension = end($x);
// Load the mime types
@include(APPPATH.'config/mimes'.EXT);
// Set a default mime if we can't find it
if ( ! isset($mimes[$extension]))
{
$mime = 'application/octet-stream';
}
else
{
$mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];
}
// Generate the server headers
if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE"))
{
header('Content-Type: "'.$mime.'"');
header('Content-Disposition: attachment; filename="'.iconv('utf-8', 'big5', $filename).'"');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-Transfer-Encoding: binary");
header('Pragma: public');
header("Content-Length: ".strlen($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($data));
}
exit($data);
}
}
裡面利用了 iconv 把 utf-8 編碼,改成 big5,這樣在 IE 底下就不會出現問題了
header('Content-Disposition: attachment; filename="'.iconv('utf-8', 'big5', $filename).'"');