Remove Image background with php and save transparent png

Question

I want to remove the white background of any image uploaded on the site working on PHP platform. The uploading function is done but messed up with this functionality.

Answer 1

Version to conversion from URL and return on page:

$img = imagecreatefromjpeg('http://mypage.com/image.jpg');

$remove = imagecolorallocate($img, 255, 255, 255); // Define color rgb to remove
imagecolortransparent($img, $remove);

ob_start();
imagepng($img);
$imgData = ob_get_clean();
imagedestroy($img);

$data_img = 'data:image/png;base64,'.base64_encode($imgData);
echo '';