change plugin active order

gistfile1.php

        // Push Gravity Forms to the top of the list of plugins to make sure it's loaded before any add-ons
        add_action("activated_plugin", array("GFForms", "load_first"));
    }

    public static function load_first() {
        $plugin_path = basename(dirname(__FILE__)) . "/gravityforms.php";
        $active_plugins = get_option('active_plugins');
        $key = array_search($plugin_path, $active_plugins);
        if ($key > 0) {
            array_splice($active_plugins, $key, 1);
            array_unshift($active_plugins, $plugin_path);
            update_option('active_plugins', $active_plugins);
        }
    }