在小部件中使用Wordpress插件功能

我有一个Wordpress插件的文件(userinfo.php)，处理一个函数——generateUserInfo()。我想在侧边栏小部件上使用这个函数。我不清楚到底该怎么做。

下面是我的插件中userinfo.php的代码。

require_once("../../../wp-load.php");
//need the current user's ID
$user = get_current_user_id();
$meetings = generateUserInfo($user, 4, 3, 'meetings');  
$events = generateUserInfo($user, 6, 2, 'events');  
function generateUserInfo($user,$taxonomy_id,$num_required_events,$event_type){
global $wpdb, $table_prefix;
$num_total_events = 0;
$num_actual_events = 0;
//Get the name of the taxonomy term for events (ID: 6)
$events = get_term_by('term_taxonomy_id', $taxonomy_id, 'events_categories');
$event_category_name = $events->name;
$event_posts = get_posts(array('post_type' => 'ai1ec_event', 'events_categories' => $event_category_name, 'posts_per_page' => -1));
foreach($event_posts as $event){
    $attended_events_query = $wpdb->get_results("SELECT vote FROM ".$table_prefix."attendance_list WHERE post = " . $event->ID . " AND user = " . $user);
    if(count($attended_events_query)>0 && is_array($attended_events_query)) {
        foreach($attended_events_query as $evt){
            //add to the acutal events attended
            if($evt->vote == 1) $num_actual_events++;
        }
    }   
    $num_total_events++;
}
$events_msg = '<div>You have attended <br> <span class="big-num">'. $num_actual_events . '</span> / ' . $num_total_events . ' ' . $event_type . '</br>('. $num_required_events.' required)<br><br></div>';
echo $events_msg;
return $events_msg;
}

这是我的小部件的开始:

 function your_widget_display($args) {
   extract($args);
   echo $before_widget;
   echo $before_title . 'Attendance Tracker' . $after_title;
   echo $after_widget;
   // print some HTML for the widget to display here
   echo 'whatever';
}
wp_register_sidebar_widget(
    'yac_attendance_widget',        // your unique widget id
    'YAC Member Attendance Tracker',          // widget name
    'your_widget_display',  // callback function
    array(                  // options
        'description' => 'Description of what your widget does'
    )
);