VaultPress::site_url PHP Method

    function site_url()
    {
        $site_url = '';
        // compatibility for WordPress MU Domain Mapping plugin
        if (defined('DOMAIN_MAPPING') && DOMAIN_MAPPING && !function_exists('domain_mapping_siteurl')) {
            if (!function_exists('is_plugin_active')) {
                require_once ABSPATH . '/wp-admin/includes/plugin.php';
            }
            $plugin = 'wordpress-mu-domain-mapping/domain_mapping.php';
            if (is_plugin_active($plugin)) {
                include_once WP_PLUGIN_DIR . '/' . $plugin;
            }
        }
        if (function_exists('domain_mapping_siteurl')) {
            $site_url = domain_mapping_siteurl(false);
        }
        if (empty($site_url)) {
            $site_url = site_url();
        }
        return $site_url;
    }