i want to download image returned by this url using a link like Download and on click of this link download box should appear so user can save image to his/her system. here is the url that return image
http://chart.apis.google.com/chart?chs=300x300&cht=qr&chld=L|0&chl=http%253A%252F%252Fnetcane.com%252Fprojects%252Fyourl%252F3
i don't want to save the image to server is it possible ?
Original Question
You can stream or proxy the file to your users by setting up a simple PHP download script on your server. When user hits the download.php script below it will set the correct headers so that their browsers asks them to save a download. It will then stream the chart image from google to the users browser.
In your HTML:
Download
In download.php:
header('Content-Type: image/png');
header('Content-Disposition: attachment; filename="chart.png"');
$image = file_get_contents('http://chart.apis.google.com/chart?chs=300x300&cht=qr&chld=L|0&chl=http%253A%252F%252Fnetcane.com%252Fprojects%252Fyourl%252F3');
header('Content-Length: ' . strlen($image));
echo $image;
Passing in dynamically generated chart API URLs
In your HTML:
<?php
$url = 'http://chart.apis.google.com/chart?my-generated-chart-api-url';
Download
In download.php:
$url = '';
if(array_key_exists('url', $_GET)
and filter_var($_GET['url'], FILTER_VALIDATE_URL)) {
$url = $_GET['url'];
}
header('Content-Type: image/png');
header('Content-Disposition: attachment; filename="chart.png"');
$image = file_get_contents($url);
header('Content-Length: ' . strlen($image));
echo $image;
No, not really. Since the image is generated at chart.apis.google.com, and you don't have control over that server, you can't make it send the Content-Disposition header with that image; therefore, browsers will display that image.
What you technically could do (but I'm not sure if Google's ToS allows it, better check), is to link to your server, which will proxy the download and add the Content-Disposition: attachment header.
I believe you will not be able to do that.
The closest thing would be to dynamically get the image data using PHP and then serving it with the header Content-Disposition: attachment; filename=qr.png
<?php
$img_data = file_get_contents("http://chart.apis.google.com/chart?chs=300x300&cht=qr&chld=L|0&chl=http%253A%252F%252Fnetcane.com%252Fprojects%252Fyourl%252F3");
header("Content-Type: image/png");
header("Content-Length: " . strlen($img_data));
header("Content-Disposition: attachment; filename=qr.png");
print $img_data;
?>
Code is untested, but I think you get the gist of it.
Hope its what you're looking for.
Related
Hi Stackoverflow community,
I've been trying to download a swf image from a extern server, which you can reach by a simple url.
Sadly the downloaded SWF wouldn't show up in the browser, so i assume its a broken file. Also I'm not able to preview the SWF file through PHP.
I know I could embed the SWF but i kinda need a screenshot or a downloaded version of it.
Code I've tested to download the SWF to my server:
function save_swf(){
$swf_file = file_get_contents('http://assets.zwinky.com/assets3/avatar/avatar10.8.swf?u=' . $this->username);
file_put_contents(strtolower($this->award . '_' . $this->username . '.swf'), $this->swf);
}
Code which i used to check if the image can be previewn by PHP:
<?php
$data = #file_get_contents('http://assets.zwinky.com/assets3/avatar/avatar10.swf?u=dane');
header("content-type: application/x-shockwave-flash");
header("Content-Disposition: inline;" echo $data);
header("accept-ranges: bytes", true);
header("connection: keep-alive", true);
echo $data;
?>
Does anyone have a idea why it wouldn't work?
Basis SWF im trying to get the file from: http://assets.zwinky.com/assets3/avatar/avatar10.8.swf?u=dane
If you write the data to a file locally on the server, the following should work:
// Write swf file locally using file_put_contents();
$fileName = ""; // The filepath where you've written it to
header("Content-Type: application/x-shockwave-flash",true);
header("Content-Length: {strlen($fileName)}",true);
header("Accept-Ranges: bytes",true);
header("Connection: keep-alive",true);
header("Content-Disposition: inline; filename=$fileName");
readfile($fileName);
Let me know if you need any addition help with this.
When
header('Content-disposition: attachment; filename=1330554893-COVER.jpg');
header('Content-type: jpeg');
readfile('watermarked/1330554893-COVER.jpg');
Is run in a file for example "testdownload.php" It downloads the image
"watermarked/1330554893-COVER.jpg"
and names it
"1330554893-COVER.jpg"
But when I try make the code dynamic to download different files.
header("Content-disposition: attachment; filename={$newFileName}");
header("Content-type: jpeg");
readfile("{$findFile}");
where
$newFileName = "1330554893-COVER.jpg" and $findFile = "watermarked/1330554893-COVER.jpg"
It downloads an image "1330554893-COVER.jpg" but it cannot be opened and I get an error "Windows Photo Viewer can't open this picture because eaither Photo Viewer doesn't support this file format"
Thanks for helping :)
Allrite then, don't use readfile(), try echo file_get_contents after the headers!
I want to show my users PDF files. The reason why I use CGI to show the PDF is I want to track the clicks for the PDF, and cloak the real location of the saved PDF.
I've been searching on the Internet and only found how to show save dialog to the users and creating a PDF, not show the files to the users.
What I wanted for is show the users my PDF files, not creating or download the PDF.
Here is what I got form the official PHP documentation:
<?php
header('Content-type: application/pdf');
readfile('the.pdf');
?>
Also my google-search-result perl code:
open(PDF, "the.pdf") or die "could not open PDF [$!]";
binmode PDF;
my $output = do { local $/; <PDF> };
close (PDF);
print "Content-Type: application/pdf\n";
print "Content-Length: " .length($output) . "\n\n";
print $output
if you do it on ruby, please say it to me. But I'm not sure if my server support rails.
Sorry if my code is too far away from the method to show the pdf, since I don't know anything about pdf processing and how to implement this problem.
Lets assume that the users have the Adobe Reader plug-in. So, how to fix my problem?
edit : I want to show plain PDF file. My primary purpose: track my pdf files and use some fancy urls.
edit : Here's my main php code:
<?php
$file='/files/the.pdf';
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="the.pdf"');
#readfile($file);
?>
edit : Now the code is working. But the loading progress bar (on Adobe Reader X plugin) doesn't shows up. Why? Anyone can help me? Here's my main code:
<?php
$file='./files/the.pdf';
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="the.pdf"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($file));
#readfile($file);
?>
edit : All my problems solved. Here's the final code:
<?php
$file = './path/to/the.pdf';
$filename = 'Custom file name for the.pdf'; /* Note: Always use .pdf at the end. */
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' . $filename . '"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($file));
header('Accept-Ranges: bytes');
#readfile($file);
?>
Thanks! :)
I assume you want the PDF to display in the browser, rather than forcing a download. If that is the case, try setting the Content-Disposition header with a value of inline.
Also remember that this will also be affected by browser settings - some browsers may be configured to always download PDF files or open them in a different application (e.g. Adobe Reader)
$url ="https://yourFile.pdf";
$content = file_get_contents($url);
header('Content-Type: application/pdf');
header('Content-Length: ' . strlen($content));
header('Content-Disposition: inline; filename="YourFileName.pdf"');
header('Cache-Control: private, max-age=0, must-revalidate');
header('Pragma: public');
ini_set('zlib.output_compression','0');
die($content);
Tested and works fine. If you want the file to download instead, replace
Content-Disposition: inline
with
Content-Disposition: attachment
You could modify a PDF renderer such as xpdf or evince to render into a graphics image on your server, and then deliver the image to the user. This is how Google's quick view of PDF files works, they render it locally, then deliver images to the user. No downloaded PDF file, and the source is pretty well obscured. :)
The safest way to have a PDF display instead of download seems to be embedding it using an object or iframe element. There are also 3rd party solutions like Google's PDF viewer.
See Best Way to Embed PDF in HTML for an overview.
There's also DoPDF, a Java based In-browser PDF viewer. I can't speak to its quality but it looks interesting.
You can also use fpdf class available at: http://www.fpdf.org.
It gives options for both outputting to a file and displaying on browser.
There is a simple solution using the embed tag:
<span class="fileShow">
<a href="aa.pdf" onclick="event.stopPropagation();" target="_blank">
<embed style="width:450px; height:300px; max-width:450px; max-height:300px" src="aa.pdf">
</a>
</span>
We have some mp3 file collection and flash player used this mp3 file, to track mp3 file listing we render mp3 file using php file below is code
http://www/example.com/getFile.php?fileid=12
<?php
$id = $_REQUEST['fileid'];
// Some code to store download traking and get filename for this id in $filename var.
$filename = getFileName($id);
header('Content-type: audio/mpeg');
header('Content-Disposition: filename=' . $id . '.mp3');
readfile($filename);
?>
But mp3 file size in very big and player get break in IE, for that we also use below code
<?php
$id = $_REQUEST['fileid'];
// Some code to store download traking and get filename for this id in $filename var.
$filename = getFileName($id);
header('Location: '. $filename);
?>
this code working fine but its also chnages current URL
i.e http://www/example.com/getFile.php?fileid=12 to http://www/example.com/files/xyz.mp3
so user can easily download mp3 file direct how i prevent this? using php or other way ?
Let Flash fetch the file. Return just the URL to Flash through the PHP.
(Sorry, didn't read the question properly when I originally posted - I see now that the problem is with IE and large file size)
You could try telling IE the length, and flushing the buffers:
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
In my program I want to add a download option to download the currently straming video. I tried this code:
$psp = "Tom_20_amp__20Jerry_20race-1.flv";
header("Content-type:application/octet-stream");
header("Content-Disposition:attachment;filename=$psp");
But I get this error:
"C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\Tom_20_amp__20Jerry_20race-1-5.flv" is not a valid FLV file.
the video streaming properly. please guide me
Change you're header from :
header("Content-type:application/octet-stream");
To :
header("Content-type: video/flv");
Then you can do :
header("Content-Disposition:attachment;filename=\"$psp\"");
//allways a good idea to let the browser know how much data to expect
header("Content-length: " . filesize($psp) . "\n\n");
echo file_get_contents($psp); //$psp should contain the full path to the video
If you are looking to allow files to be downloaded instead of streamed then something like this should work. You will obviously need to change the paths.
// We'll be outputting a PDF
header('Content-type: application/pdf');
// It will be called downloaded.pdf
header('Content-Disposition: attachment; filename="download.pdf"');
// The PDF source is in original.pdf
readfile('original.pdf');
EDIT
In your case it will be something like this.
// We'll be outputting a video
header('Content-type: video/flv');
// It will be called video.flv
header('Content-Disposition: attachment; filename="video.flv"');
// The PDF source is in original.flv
readfile('original.flv');