protected function _convert_gif_bmp_to_png($image_url, $type)
    {
        $func_name = "imagecreatefrom$type";

        if (!function_exists($func_name)) {
            if (!method_exists("Dompdf\Helpers", $func_name)) {
                throw new Exception("Function $func_name() not found.  Cannot convert $type image: $image_url.  Please install the image PHP extension.");
            }
            $func_name = "\\Dompdf\\Helpers::" . $func_name;
        }

        set_error_handler(array("\\Dompdf\\Helpers", "record_warnings"));
        $im = call_user_func($func_name, $image_url);

        if ($im) {
            imageinterlace($im, false);

            $tmp_dir = $this->_dompdf->getOptions()->getTempDir();
            $tmp_name = @tempnam($tmp_dir, "{$type}dompdf_img_");
            @unlink($tmp_name);
            $filename = "$tmp_name.png";
            $this->_image_cache[] = $filename;

            imagepng($im, $filename);
            imagedestroy($im);
        } else {
            $filename = Cache::$broken_image;
        }

        restore_error_handler();

        return $filename;
    }
protected function _convert_gif_bmp_to_png($image_url, $type)
    {
        $func_name = "imagecreatefrom$type";

        if (!function_exists($func_name)) {
            if (!method_exists("Dompdf\Helpers", $func_name)) {
                throw new Exception("Function $func_name() not found.  Cannot convert $type image: $image_url.  Please install the image PHP extension.");
            }
            $func_name = "\\Dompdf\\Helpers::" . $func_name;
        }

        set_error_handler(array("\\Dompdf\\Helpers", "record_warnings"));
        $im = call_user_func($func_name, $image_url);

        if ($im) {
            imageinterlace($im, false);

            $tmp_dir = $this->_dompdf->getOptions()->getTempDir();
            $tmp_name = @tempnam($tmp_dir, "{$type}dompdf_img_");
            @unlink($tmp_name);
            $filename = "$tmp_name.png";
            $this->_image_cache[] = $filename;

            imagepng($im, $filename);
            imagedestroy($im);
        } else {
            $filename = Cache::$broken_image;
        }

        restore_error_handler();

        return $filename;
    }
protected function _convert_gif_bmp_to_png ( $ image_url , $ type ) { $ func_name = "imagecreatefrom$type" ; if ( ! function_exists ( $ func_name ) ) { if ( ! method_exists ( "Dompdf\Helpers" , $ func_name ) ) { throw new Exception ( "Function $func_name() not found.  Cannot convert $type image: $image_url.  Please install the image PHP extension." ) ; } $ func_name = "\\Dompdf\\Helpers::" . $ func_name ; } set_error_handler ( array ( "\\Dompdf\\Helpers" , "record_warnings" ) ) ; $ im = call_user_func ( $ func_name , $ image_url ) ; if ( $ im ) { imageinterlace ( $ im , false ) ; $ tmp_dir = $ this -> _dompdf -> getOptions ( ) -> getTempDir ( ) ; $ tmp_name = @ tempnam ( $ tmp_dir , "{$type}dompdf_img_" ) ; @ unlink ( $ tmp_name ) ; $ filename = "$tmp_name.png" ; $ this -> _image_cache [ ] = $ filename ; imagepng ( $ im , $ filename ) ; imagedestroy ( $ im ) ; } else { $ filename = Cache :: $ broken_image ; } restore_error_handler ( ) ; return $ filename ; }
Convert a GIF or BMP image to a PNG image

@param string $image_url
@param integer $type

@throws Exception
@return string The url of the newly converted image
Convert a GIF or BMP image to a PNG image