How to save a PNG image server-side, from a base64 data string

Question

I\'m using Nihilogic\'s \"Canvas2Image\" JavaScript tool to convert canvas drawings to PNG images. What I need now is to turn those base64 strings that this tool generates,

Answer 1

I had to replace spaces with plus symbols str_replace(' ', '+', $img); to get this working.

Here is the full code

$img = $_POST['img']; // Your data 'data:image/png;base64,AAAFBfj42Pj4';
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$data = base64_decode($img);
file_put_contents('/tmp/image.png', $data);

Hope that helps.