CFile::ImageRotate

static function ImageRotate($sourceFile, $angle)
{
	$image = new FileImage($sourceFile);
	if(!$image->load())
	{
		return false;
	}

	$quality = COption::GetOptionString('main', 'image_resize_quality');

	$result = ($image->rotate($angle) && $image->save($quality));

	$image->clear();

	return $result;
}