Code playground -> Some functions don't work (e.g. imagecreatetruecolor).

Question

Does anyone know why? Some problem with the GD library?

$image = imagecreatetruecolor(200, 200);
$color = imagecolorallocate($image, 0, 0, 64);
imagefill($image, 0, 0, $color);
imagerectangle($image, 0, 0, 200, 200, $color);
Header('Content-type: image/png');
imagepng($image);

Output: Fatal error: Uncaught Error: Call to undefined function imagecreatetruecolor() in ..\Playground\:4 Stack trace: #0

Answer 1

Thanks!

Answer 2

PHP images *do* work, but sometimes the gd extension isn't loaded (in this case I show what extensions loaded):
https://code.sololearn.com/wJQ7QO3k7KOX/?ref=app

Note, you can't send headers from PHP here and there's an output glitch with normal base64; I use a 'safe' encoding to deliver the data to the app.