I want to dowload as a web-client a photo from my webserver with PHP.
Therefore, I've written the following PHP-Script:
header('Content-Description: File Transfer');
header('Content-Type: image/jpg');
header('Content-Disposition: attachment; filename='.$filename);
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($filename));
readfile("/var/www/_old/pictures/".$filename);
($filename is the name of the file, like screenshot_03.06.2016-19:36:50.jpg)
The problem is, the content of this downloaded image is not the image itself, it's the code from the current website. The download works fine, but I cannot open the image properly ...
OK.
After some time, I found a working solution.
My problem was, that I wrote the header-commands AFTER some output. According to the php documentation, this is forbidden.
So all I did is this, I created a new .php-file and checked if the session (in which I previously stored the needed information - filename and download-command) was set correct. On the previous page, I received the POST-information, stored it into the session and redirected (also with header-command) to the newly created php-file.
Then I wrote these header-commands:
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.basename($filename).'"');
readfile($filename);
And now, the download works from all browsers (also IE!).
Here is all my code, I hope this could help someone:
1st page (where I receive the POST-infos):
session_start();
...
...
if(isset($_POST["galerie_submitBt"])){
if($_POST["galerie_submitBt"] === "Herunterladen") { //Das Herunterladen muss in einer eigenen Datei passieren, bevor jeglichen Outputs
$_SESSION["download_Screenshot"] = true;
$_SESSION["filename"] = "/var/www/_old/pictures/".$_POST["filename"];
header("Location:modules/php/download_Screenshot.php");
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>...
2nd, new created php-page (where I actually download the image):
session_start();
if(isset($_SESSION["download_Screenshot"])){
if(isset($_SESSION["filename"]) && file_exists($_SESSION["filename"])) {
$filename = $_SESSION["filename"]; //Filename also includes the path! (absolute path)
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.basename($filename).'"');
readfile($filename);
unset($_SESSION["filename"]);
unset($_SESSION["download_Screenshot"]);
}
}
Related
For an newsletter script I like to use an image to check if it is read or not. So we made an image like this in our script:
<img src="[url]/getEmailImage/test/">
When this url is triggered it registers that the mail is opened.
At the server side we use this meganism:
// register that the email is read
$this->modelOpslag->changeByToken($token,array('gelezen' => '1'));
// download image and show is
$image = base_url().'external/afbeeldingen/pixel.jpg';
$info = getimagesize($image);
header('Content-Type: '.$info['mime']);
echo file_get_contents($image);
exit;
When i remove the PHP header function is shows something like this:
����JFIF``��rExifMM*JR(1Z``paint.net 4.0.5��
etc...
With the header my browser gives the error: the image cannot be displayed, because is contains errors.
What did I do wrong?
-- EDIT --
I've got no solutions for this specific problem, but i found an alternative in case someone like to use this meganism for their newsletter witch works:
$file = './external/afbeeldingen/pixel.jpg';
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit;
}
If i understood your question correctly.. you are trying to echo the image, using echo we cannot display the image..
Why don't you use...
<img src="<?php echo file_get_contents($image); ?>" />
you need different headers for image download and for showing image dynamically. Also file encoding format of the php script can cause broken image data.
I have an issue with the force download of a file.
I'm using PHPExcel to create a xls file based on information extracted from our database. This all works fine and the Excel file works as required.
I then attempt to force download of created file using the following function. However it downloads webpage rather than as a file.
Currently developing on Win XP SP3, Notepad++, XAMPP (Apache 2.4.3, PHP 5.4.7).
**function following
public function downloadfile($file){
if(file_exists($file) && is_file($file)){
//ob_start();
echo $file;
echo "in file exists";
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
//ob_end_flush();
}else
echo "file or location does not exist <br>";
echo $file;
}
Any help would be appreciated.
Thanks in advance
If its a excel file then just redirect to that url and by default it will ask for file download.
header("Location: http://site.com/path/to/file/filename.xlsx");
/* Make sure that code below does not get executed when we redirect. */
exit;
If in javascript give
location.href = 'http://site.com/path/to/file/filename.xlsx';
header("Content-Type: application/vnd.ms-excel; charset=UTF-8");
header("Content-Disposition: inline; filename=\"" . $fileName . ".xls\"");
header("Pragma: no-cache");
header("Expires: 0");
readfile($filePath);
try this
What I want to do is to allow only one download per user (one access to a href) For that I have a variable in the user's table, which I do change when the link has been clicked.
I use "download.php?file=file.xxx" for doing that.
download.php
$file= basename($_GET['file']);
$root = "documents/rece/";
$path= $root.$file;
echo $path;
if (is_file($path))
{
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.$file);
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($path));
readfile($path);
}
else
echo "File error";
exit();
?>
I also update the DDBB and that works. After that I can show or hide the link. The problem is that the downloaded file is corrupted and can't be opened. I will use it with pdf or doc, maybe zip.
Could it be because of the path?
PDF files, as far as I know, start with something like this:
%PDF-1.4
Yours start with 4 blank lines plus documents/rece/Form.pdf%PDF-1.4. You're obviously printing it yourself somewhere before the code you've posted.
The code below is for two purposes
1) I save a text file on my server in a folder named "backup_db" its working fine mean when I open that text file it contain all the data
2) At the same time i also make this file downloadable for a user so that he could download it for himself and could save it on his hard disk and according to my wish its downloading but unfortunately the .txt file saved on my hard disk is, when open its empty and i don't know why please help me out
//save file
$handle = fopen('backup_db/db-backup-'.date('d-m-Y_H-i-s').'-'.(md5(implode(',',$tables))).'.txt','w+');
$rr = fwrite($handle,$re);
//fclose($handle);
$ww = "db_backup".$rr.".txt";
//$handle = "";
header('Content-Disposition: attachment; filename=' . urlencode($ww));
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream');
header('Content-Type: application/download');
header('Content-Description: File Transfer');}}
You only set the HTTP header but did not write the file into the response body. Use either fpassthru() or readfile() to write the content of the file directly to the response.
Sample (taken from php.net)
<?php
$file = 'monkey.gif';
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
flush();
readfile($file);
exit;
}
?>
BTW:
Settings the same header multiple times simply overwrites the value set before unless you set the second parameter of header() to false.
Your code
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream');
header('Content-Type: application/download');
results in the following header:
Content-Type: application/download
Sending a file namein the header just gives the user a suggested filename. Try echoing out the contents of the file.
You should add
header("Content-Length: $size")
where $size is size of yout file in bytes.
Check this
ex :
$filename = urlencode($fileName); //download.txt
header("Content-Disposition: attachment; filename=\"" . $filename. "\";" );
I'm looking to add a "Download this File" function below every video on one of my sites. I need to force the user to download the file, instead of just linking to it, since that begins playing a file in the browser sometimes. The problem is, the video files are stored on a separate server.
Any way I can force the download in PHP?
You could try something like this:
<?php
// Locate.
$file_name = 'file.avi';
$file_url = 'http://www.myremoteserver.com/' . $file_name;
// Configure.
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$file_name."\"");
// Actual download.
readfile($file_url);
// Finally, just to be sure that remaining script does not output anything.
exit;
I just tested it and it works for me.
Please note that for readfile to be able to read a remote url, you need to have your fopen_wrappers enabled.
Tested download.php file is
function _Download($f_location, $f_name){
$file = uniqid() . '.pdf';
file_put_contents($file,file_get_contents($f_location));
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Length: ' . filesize($file));
header('Content-Disposition: attachment; filename=' . basename($f_name));
readfile($file);
}
_Download($_GET['file'], "file.pdf");
and the link to download is
Descargar
Try this:
<?php
$FileName = '/var/ww/file.txt';
header('Content-disposition: attachment; filename="'.$FileName.'"');
readfile($FileName);
The key is the header(). You need to send the header along with the download and it will force the "Save File" dialog in the user's browser.
<?php
$file_name = 'video.flv';
$file_url = 'http://www.myserver.com/secretfilename.flv';
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$file_name."\"");
echo file_get_contents($file_url);
die;
?>
I don't know this is the best way or not but I like that, short & simple.
If you want to download file when you visit URL, you can do like below
<a href="resume.pdf" download></a>
<script>document.querySelector('a').click();</script>
index.php
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>download</title>
</head>
<body>
download
</body>
</html>
.htaccess
Options -Indexes
Options +FollowSymlinks
deny from all
download.php
$file = "pdf/teste.pdf";
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit();
}
<?php
$FileName = '/var/ww/file.txt';
header('Content-disposition: attachment; filename="'.$FileName.'"');
readfile($FileName);
using this code. is it possible to save the file name to what you want. for example you have url: http://remoteserver.com/file.mp3 instead of "file.mp3" can you use this script to download the file as "newname.mp3"