Curl\CurlTest::create_png PHP Method

    function create_png()
    {
        // PNG image data, 1 x 1, 1-bit colormap, non-interlaced
        ob_start();
        imagepng(imagecreatefromstring(base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7')));
        $raw_image = ob_get_contents();
        ob_end_clean();
        return $raw_image;
    }