followers_ids_by_id() public method

对应API:{@link http://open.weibo.com/wiki/2/friendships/followers friendships/followers}
public followers_ids_by_id ( integer $uid, integer $cursor, integer $count = 50 ) : array
$uid integer 需要查询的用户UID
$cursor integer 返回结果的游标,下一页用返回值里的next_cursor,上一页用previous_cursor,默认为0。
$count integer 单页返回的记录条数,默认为50,最大不超过200。
return array
} else {
    foreach ($sql_res as $k) {
        $do_tasks[$k['user_id']] = $k['sina_uid'];
        echo "{$k['nick_name']} sina_uid: {$k['sina_uid']}\n";
    }
}
// 此时 $do_task 中存放的是 user_id 和 sina_uid 的键值对。
// 使用api查询任务微博的转发微博 statuses/repost_timeline/ids
$uid = 9;
// 此处需要一个具有可用token的uid
$sql = "select sina_token from user_info_sina where user_id = {$uid} limit 1";
$sql = 'select sina_token from user_info_sina where sina_token is not null and unix_timestamp(now()) < unix_timestamp(token_update_at)+token_expires_in limit 1';
$sql_res = $dbo->getRow($sql);
$c = new SaeTClientV2(WB_AKEY, WB_SKEY, $sql_res['sina_token']);
//echo "data from sina api, uid:\n";
$followers_ids = $c->followers_ids_by_id($task_uid, 0, 5);
if_weiboapi_fail($followers_ids, __FILE__, __LINE__);
if (!$followers_ids || 0 === count($followers_ids)) {
    echo "nobody or nodata received from sina api";
} else {
    foreach ($followers_ids['ids'] as $id) {
        //        echo $id."\n";
    }
}
echo "failed by draft1\n";
echo "----------------------\n";
if (0 === count($do_tasks)) {
    echo "nobody did the task\n";
    exit;
}
if (0 === count($followers_ids)) {