Sharing_Service::set_global_options PHP Method

    public function set_global_options($data)
    {
        $options = get_option('sharing-options');
        // No options yet
        if (!is_array($options)) {
            $options = array();
        }
        // Defaults
        $options['global'] = array('button_style' => 'icon-text', 'sharing_label' => $this->default_sharing_label, 'open_links' => 'same', 'show' => array(), 'custom' => isset($options['global']['custom']) ? $options['global']['custom'] : array());
        /**
         * Filters global sharing settings.
         *
         * @module sharedaddy
         *
         * @since 1.1.0
         *
         * @param array $options['global'] Array of global sharing settings.
         */
        $options['global'] = apply_filters('sharing_default_global', $options['global']);
        // Validate options and set from our data
        if (isset($data['button_style']) && in_array($data['button_style'], array('icon-text', 'icon', 'text', 'official'))) {
            $options['global']['button_style'] = $data['button_style'];
        }
        if (isset($data['sharing_label'])) {
            if ($this->default_sharing_label === $data['sharing_label']) {
                $options['global']['sharing_label'] = false;
            } else {
                $options['global']['sharing_label'] = trim(wp_kses(stripslashes($data['sharing_label']), array()));
            }
        }
        if (isset($data['open_links']) && in_array($data['open_links'], array('new', 'same'))) {
            $options['global']['open_links'] = $data['open_links'];
        }
        $shows = array_values(get_post_types(array('public' => true)));
        $shows[] = 'index';
        if (isset($data['show'])) {
            if (is_scalar($data['show'])) {
                switch ($data['show']) {
                    case 'posts':
                        $data['show'] = array('post', 'page');
                        break;
                    case 'index':
                        $data['show'] = array('index');
                        break;
                    case 'posts-index':
                        $data['show'] = array('post', 'page', 'index');
                        break;
                }
            }
            if ($data['show'] = array_intersect($data['show'], $shows)) {
                $options['global']['show'] = $data['show'];
            }
        }
        update_option('sharing-options', $options);
        return $options['global'];
    }

 public function process_requests()
 {
     if (isset($_POST['_wpnonce']) && wp_verify_nonce($_POST['_wpnonce'], 'sharing-options')) {
         $sharer = new Sharing_Service();
         $sharer->set_global_options($_POST);
         do_action('sharing_admin_update');
         wp_safe_redirect(admin_url('options-general.php?page=sharing&update=saved'));
         die;
     }
 }