无法将文件发送给浏览器/用户

Question

I'm trying to send a zip file to the user.

$file_info = get_file_info($filepath_name);
header("Content-Type: " . get_mime_by_extension($filepath_name));
header("Content-Length: " . $file_info["size"]);
header_remove('Pragma');
header_remove('Cache-Control');
//header("Content-Type: application/force-download");
header('Content-Type: application/octet-stream');        
header('Content-Disposition: attachment; filename='.urlencode($filepath_name));
header('Location: file://'.$filepath_name);
readfile($filepath_name);

$filepath_name is set to "D:\dev2.local\storage_users\1\export_data\course_2357.zip".

readfile() returns the correct size of file but the file is still not served for downloading.

I've tried all the combinations of headers settings to no avail.

Answer 1

Problem found:

This functionality was called via AJAX call, thats why php didnt allow file to be send.

Solution found: Had to return file path and name back to js from where php was ajaxed and serve file from js.

EDIT: this is the workaround I used:

                                var hostname = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');

                            jQuery('<iframe>', {
                               src: hostname + value.return_zip,
                               id:  'iFrame_zip_download',
                               frameborder: 0,
                               scrolling: 'no'
                           }).appendTo('#export_import_status');

Where value.return_zip is relative path to file on server (/storage_users/xx/xx/xx.zip). I then add hostname and it turns out nicely for example: https://www.google.com/storage_users/xx/xx/xx.zip. iFrame is hidden in status div.