Fabric.js canvas.toDataURL() sent to PHP by Ajax

Question

I have a problem here when I need create a image with transparent background. I still don´t know if the problem is with fabricjs or with php. Everything works fine when I sent a

Answer 1

I had the exact same problem and added this
imageAlphaBlending($img, true);
imageSaveAlpha($img, true);
to rodrigopandini's code and it works perfect now.:)

 // createImage.php

$data = base64_decode($_POST["str"]);

$urlUploadImages = "../uploads/img/";
$nameImage = "test.png";

      $img = imagecreatefromstring($data);

      imageAlphaBlending($img, true);
      imageSaveAlpha($img, true);

if($img) {
    imagepng($img, $urlUploadImages.$nameImage, 0);
    imagedestroy($img);

    // [database code]

    echo "OK";
    }
     else {
          echo 'ERROR';
          }