Error in displaying the image of the screenshot of a webpage - php

Question

I've the code which takes the screen shot of the specified div tab. But I'm encountering the problem to display it as .png file from base64 format
Here is my code.
It has two separate files
1) Download.php
<script type="text/javascript"src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="js/html2canvas.js"></script>
<script type="text/javascript" src="js/jquery.plugin.html2canvas.js"></script>
<!-- -->
<div id="target">
<img src="images/1.jpg" alt="Smiley face" width="100" height="100">
</div>
<script type="text/javascript">
function capture() {
$('#target').html2canvas({
onrendered: function (canvas) {
//Set hidden field's value to image data (base-64 string)
$('#img_val').val(canvas.toDataURL("image/png"));
//Submit the form manually
document.getElementById("myForm").submit();
}
});
}
</script>
<input type="submit" value="Take Screenshot Of Div" onclick="return capture();" />
<form method="POST" enctype="multipart/form-data" action="save.php" id="myForm">
<input type="hidden" name="img_val" id="img_val" value="" />
</form>
2)Save.php
<?php
//Show the image
$data = $_POST['img_val'];
//Get the base-64 string from data
$uri = substr($data, strpos($data, ",") + 1);
//Decode the string
$unencodedData = base64_decode($uri);
$im = str_replace($data, '+', 'img.png');
//Save the image
$v = file_put_contents($data, $im);
$result = '<img src="' . $im . '" />';
print_r($result);
?>
I need the image to be displayed as localhost/xyz/screenshot/img.png which I'm unable to do.Please see the code help me to figure out that problem.
Thanks in advance.

Answer 1

I cant see any element in html with id attribute of target in your code but you are using it
$('#target').html2canvas({
Similar question [here][1]
I have found some thing usefull
var html2obj = html2canvas($('body'));
var queue = html2obj.parse();
var canvas = html2obj.render(queue);
var img = canvas.toDataURL();
window.open(img);
[1]: http://stac
koverflow.com/questions/10457608/create-screenshot-of-webpage-using-html2canvas-unable-to-initialize-properly