Taxonomy Images II - WP functions

//function to get an image from category ii images plugin
function get_category_images_ii_img($tid){
    $wp_upload_dir = wp_upload_dir();
    $base_dir = $wp_upload_dir[ 'basedir' ];
    $base_url = $wp_upload_dir[ 'baseurl' ];
    $base_dir .= "/category-images-ii/";

    if(file_exists($base_dir . "/" . $tid . ".dat")){
        $serialized = file_get_contents( $base_dir . "/" . $tid . ".dat" );
        $data = unserialize( $serialized );
        $data['original'] = $base_url . "/category-images-ii/" . $data['original'];
        $data['thumb'] = $base_url . "/category-images-ii/" . $data['thumb'];
        return $data;
    }else{
        return;
    }
}

//function to get a list of terms and add the images from category ii images plugin
function get_terms_with_category_images_ii($tax){
    $terms = get_terms($tax);
        foreach($terms as $key => $val){
            $imgs = get_category_images_ii_img($val->term_id);
            $val->img = $imgs['original'];
            $val->tmb = $imgs['thumb'];
            $terms[$key] = $val;
        }
    return($terms);
}