dataurl to image for download in php

Question

I'm creating image using canvas and using following script,

function getImage() { var canvas1 = document.getElementById("images"); if (canvas1.getContext) { var ctx = canvas1.getContext("2d"); var myImage = canvas1.toDataURL("image/jpg"); } $('<form action="download.php" method="POST">' + '<input type="hidden" name="aid" value="' + myImage + '">' + '</form>').submit(); }

And in my Download.php file is,

<?php $img = $_POST['aid']; echo "<img src=".$img.">"; ?>

it showing image correctly. But i wanna give download button with jpg format or pdf format.

How i can use?

I used base64_decode(); method. But i cant solve.

Help me...

Community · Accepted Answer · 2017-05-23 11:54:43Z

Thanks for all. but I got answer using,

file_put_contents();

But thing, i dont know how to use. Finally i got it from this Answer.

Answer is,

$data = 'data:image/png;base64,AAAFBfj42Pj4'; list($type, $data) = explode(';', $data); list(, $data) = explode(',', $data); $data = base64_decode($data); file_put_contents('/tmp/image.png', $data);

But still i'm waiting for download button with option of image/pdf format.

Community · Accepted Answer · 2020-06-20 09:12:55Z

Try this:

PHP echo'ed image with link

<?php $img = $_POST['aid']; echo "<a href='download_image.php'><img src=".$img."></a>"; ?>

download_image.php

<?php $img = "myimage.jpg"; // fix for IE catching or PHP bug issue header("Pragma: public"); header("Expires: 0"); // set expiration time header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); // browser must download file from server instead of cache // force download dialog header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); // use the Content-Disposition header to supply a recommended filename and // force the browser to display the save dialog. header("Content-Disposition: attachment; filename=".basename($img).";"); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".filesize($img)); readfile("$img"); exit(); ?>

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dataurl to image for download in php

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Try this:

download_image.php

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Try this:

download_image.php

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