Custom Taxonomies

Is there a way to accomplish this for multiple forms?

add_filter("gform_post_data", "empty_tags", 10, 2);
function empty_tags($post_data, $form){
    //replace 4 with your actual form id
    if($form["id"] !=4)
        return;

    $post_data["tags_input"] = null;
    return $post_data;
}

add_filter("gform_post_submission", "insert_custom_taxonomies", 10, 2);
function insert_custom_taxonomies($entry, $form){

    //REPLACE 4 with your actual form id
    if($form["id"] !=4)
        return;

    //getting post
    $post_id = $entry["post_id"];

    //REPLACE 2 with your actual field id and "post_tag" with your custom taxonomy
    wp_set_object_terms($post_id, explode(",", $entry[2]), "post_tag");

    //REPLACE 3 with your actual field id and "activities" with your second taxonomy
    wp_set_object_terms($post_id, explode(",", $entry[3]), "activities");
}

It's perfect for a single form, but I have several others where I need to do the same.