Question

I have this code which send an image to test.php:

 chrome.browserAction.onClicked.addListener(function(tab) {
   chrome.tabs.captureVisibleTab(null, function(img) {

   $.ajax({
   type: "POST",
   url: "http://imap24.pl/tests/dom/testy/test.php",
   data: "img=" + img,
   success: function(e){
     alert(e);
   }});


   });
 });

The img is base64 (data:image/jpeg;base64,/9j/4AAQSkZ…). I have this script in test.php

<?php
if (isset($_POST['img'])) {
$img = $_POST['img'];
$data = base64_decode($img);
$im = imagecreatefromstring($data);
imagejpeg($im, 'simpletext.jpg');
imagedestroy($im);
}
?>

And as the result I get this message

the data is not in a recognised format

What’s wrong?

Answer 1

As you stated the image looks like this: data:image/jpeg;base64,…
So you should strip the first part of this Data-URL, then write it directly to a file:

$comma = strpos($img, ',');
$data = base64_decode(substr($img, $comma+1));
file_put_contents("simpletext.jpg", $data);