Header Content-length not working - php

Question

I'm doing file download with renaming it before. Everything works except size. I can't set file size with
header('Content-Length: ');
even I'm setting it to
header('Content-Length: 15444544545');
it's not working. I'm using PHP codeigniter framework, where is the problem?
EDIT: more code:
$file_data = array(
'originalName' => $post_info['file_info'][0]['original_name'],
'fakeName' => $post_info['file_info'][0]['file_name'],
'modificationId' => $post_info['file_info'][0]['modification_article_id'],
'extension' => end(explode('.', $post_info['file_info'][0]['original_name'])),
'name' => str_replace(".".end(explode('.', $post_info['file_info'][0]['original_name'])), "", $post_info['file_info'][0]['original_name']),
'filesize' => filesize($post_info['file_info'][0]['file_name'])
);
header('Cache-Control: public');
header('Content-Description: File Transfer');
header('Content-Disposition: attachment; filename=' . $file_data['name'] . '.' . $file_data['extension']);
header('Content-Length: ' . filesize(base_url().$file_data['fakeName']));
// Read file
readfile(base_url().$file_data['fakeName']);
//print_r($file_data);
echo "<script>window.close();</script>";
EDIT: Solution
there was a server problem

Answer 1

You can try like this:
$mm_type="application/octet-stream";
header("Cache-Control: public, must-revalidate");
header("Pragma: hack");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($fullpath)) );
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary\n");
readfile($fullpath);

Answer 2

wrong usage of base_url().
where is your file stored?
maybe you can try the constant FCPATH instead of call function base_url()
and you have the filesize stored in $file_data['filesize']
finally there should not be a line echo "<script>window.close();</script>"; in your php script when the file content was output.

Answer 3

You tried with download_helper?? Sintax: force_download($filename, $data).
Also in your code you're reading file through URL. Use file system path instead.
From controller action:
<?php
public function download()
{
//Your code here...
$filePath = realpath(FCPATH.DIRECTORY_SEPARATOR.'uploads/myfile.pdf'); //FakeName????
force_download($file_data['fakeName'], readfile($filePath));
}
If my solution don't works give me a touch to give you other way.
Note: FCPATH is the front controller path, a public folder of server e.g.(/var/www/CodeIgniter). Other path constants are already defined on index.php (front-controller).
A print of $file_data['fakeName'] will be useful.
If your CodeIgniter version don't have download_helper make your own... refer to CI docs for full explanation. There is the force_download function code:
function force_download($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
if (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 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 (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE)
{
header('Content-Type: "'.$mime.'"');
header('Content-Disposition: attachment; filename="'.$filename.'"');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-Transfer-Encoding: binary");
header('Pragma: public');
header("Content-Length: ".strlen($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);
}