php download files not working on mobile - php

if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $filename. "." . $exts );
flush();
readfile($file);
exit;
}
this code works on pc, but on mobile i can not open the file. The headers is incorrect?


Try adding:
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
After
header('Content-Disposition: attachment; filename=' . $filename. "." . $exts );

Related

Php PhpZip error Unexpected end of archive

Am trying to secure files with password before downloading it, but it showing error.
Am using PhpZip
Password Secure Archive
$zipFile = new \PhpZip\ZipFile();
$zipFile->addFile(__DIR__ . "/../files/oneTextFile.txt");
// Or $zipFile->addFile(__DIR__ . "/../files/oneZipFile.zip");
$zipFile->setPassword("12345Abc");
$zipFile->saveAsFile("secure-file.zip");
$zipFile->close();
Download Code
$file = __DIR__ . "/downloads/secure-file.zip";
if(file_exists($file)){
$type = mime_content_type($file);
if(!empty($type)){
header("Content-Type: {$type}");
}else{
header('Content-Type: application/octet-stream');
}
//header('Content-Type: package/x-generic');
header('Content-Description: File Transfer');
header("Cache-Control: private");
header("Content-Transfer-Encoding: binary");
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Connection: Keep-Alive');
header('Pragma: public');
header('Content-Disposition: attachment; filename="'.$name.'"');
header("Content-Length: " . filesize($file));
readfile($file);
unlink($file);
exit();
}

Error: Duplicate headers received from server

Dublicate error happened in chrome, opera, safari and only works on firefox.
Here's the header:
| Header
| Forcing a download using readfile()
|----------------
*/
header('Content-Description: File Transfer');
header('Content-Type: ' . $file_mime_type);
header('Content-Disposition: attachment; filename=' . $file);
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . $file_size);
ob_clean();
flush();
readfile($file_path);
exit;
I've tried to put double quotes and works but adds to file name - for e.g. -'filename.pdf'
header("Content-Disposition: attachment; filename= . '$file'");

To fix issue you need
// Change this
header('Content-Disposition: attachment; filename=' . $file);
// To this
header('Content-Disposition: attachment; filename="'.$file.'"');

Downloaded file save with 0kb and damaged

I have a problem with download script
when I download any file it is save with 0kb.
Any ideas? Here is my PHP script
<?php
$file = $_GET['fname'];
$fullpath = get_bloginfo('template_url')."/application/display/1358947404.pdf";
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($fullpath));
header('Expires: 0');
header('Cache-Control: must-revalidate');
ob_clean();
flush();
readfile($fullpath);
?>

Please add content-length header as well .
Please try this:-
<?php
$file = $_GET['fname'];
$fullpath = get_bloginfo('template_url')."/application/display/1358947404.pdf";
$headers = get_headers($fullpath, 1);// use file absolute path here
$fsize = $headers['Content-Length'];
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($fullpath));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header("Content-Length: " . $fsize);
ob_clean();
flush();
readfile($fullpath);
?>

Try below code hope it will help you.
I have tested this in my localhost.
$file = $_GET['fname'];
$fullpath = get_bloginfo('template_url')."/application/display/1358947404.pdf";
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($fullpath));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($fullpath));
ob_clean();
flush();
readfile($fullpath);

Force Downloading file through php not working

I was trying to write a script through which user can download the image directly.
Here is the code i end up with,
<?php
$fileContents = file_get_contents('http://xxx.com/images/imageName.jpg');
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.urlencode("http://xxx.com/images/imageName.jpg"));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($fileContents));
ob_clean();
flush();
echo $fileContents;
exit;
?>
But everytime i hit the url for the above script in the browser it returns a file with zero byte data.
would you like to help me to resolve this problem ?

Try the code below
<?php
$file_name = 'file.png';
$file_url = 'http://www.myremoteserver.com/' . $file_name;
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$file_name."\"");
readfile($file_url);
?>
Read more , Read this tutorial too

I notice that you use filesize on the contents of the file instead of at the filename itself;
Your code would work if it was:
<?php
$filename = 'http://xxx.com/images/imageName.jpg';
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.urlencode($filename));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($filename));
ob_clean(); // not necessary
flush(); // not necessary
echo file_get_contents($filename); // or just use readfile($filename);
exit;
?>

Download content of several files on server with PHP

I have 2 files - 1.csv and 2.csv. I can download 1.csv with PHP by known approach:
$file = '1.csv';
header('Content-Description: File Transfer');
header('Content-Type: application/jpeg');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: public');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
But my purpose is to have in downloaded file content of both files - 1.csv and 2.csv. Does anybody have some ideas how to implement this?
Thank you in advance.

If I understand you correctly this should do it.
$file1 = '1.csv';
$file2 = '2.csv';
header('Content-Description: File Transfer');
header('Content-Type: text/comma-separated-values');
header('Content-Disposition: attachment; filename='.basename($file1, '.csv') . '-' . basename($file2, '.csv') . '.csv');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: public');
header('Pragma: public');
header('Content-Length: ' . (filesize($file1) + filesize($file2)));
ob_clean();
flush();
readfile($file1);
readfile($file2);
Consider using a loop for multiple files and mind the change of the Content-Type header for CSV files.

$file1 = '1.csv';
$file2 = '2.csv';
header('Content-Description: File Transfer');
header('Content-Type: application/jpeg');
header('Content-Disposition: attachment; filename="1-2.csv"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: public');
header('Pragma: public');
header('Content-Length: ' . (filesize($file1)+filesize($file2)));
ob_clean();
flush();
echo file_get_contents($file1).file_get_contents($file2);
Downloads the concatenation of the 2 file contents

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