GdThumb::show PHP Method

    public function show($rawData = false)
    {
        if (headers_sent()) {
            throw new RuntimeException('Cannot show image, headers have already been sent');
        }
        switch ($this->format) {
            case 'GIF':
                if ($rawData === false) {
                    header('Content-type: image/gif');
                }
                imagegif($this->oldImage);
                break;
            case 'JPG':
                if ($rawData === false) {
                    header('Content-type: image/jpeg');
                }
                imagejpeg($this->oldImage, null, $this->options['jpegQuality']);
                break;
            case 'PNG':
            case 'STRING':
                if ($rawData === false) {
                    header('Content-type: image/png');
                }
                imagepng($this->oldImage);
                break;
        }
        return $this;
    }