从Facebook获取活动 - Getting events from Facebook

我目前正试图通过使用Facebook api来获取和解析用户的事件。为了做到这一点，我正在使用下面的函数。

function facebook_get_events($facebookSession) {
        // make the API call and get array of event objects
        $events = (new FacebookRequest($facebookSession, 'GET', '/me/events')->execute()->getGraphObject();
        log("Got events from facebook " . count($events));
        foreach ($events as $event) {
           echo $event->getProperty('id');
        }
        return events;
}

问题：问题是它不起作用。在日志中，我注意到数组中只有一个元素。顺便说一句，我假设事件是一个数组，因为根据Facebook的文档，响应是"事件对象的数组"。单击此处查看文档链接。

关于id的打印，没有显示任何内容。

为了检查请求是否正确，我还使用了Facebook的Graph API Explorer，它正确地返回了事件列表。结果结构如下所示（出于隐私考虑，信息已被删除）。

    {
      "data": [
        {
          "name": "...", 
          "start_time": "...", 
          "location": "...", 
          "rsvp_status": "...", 
          "id": "..."
        }, 
        {
          "name": "...", 
          "start_time": "...", 
          "timezone": "...", 
          "rsvp_status": "...", 
          "id": "..."
        }
      ], 
.....
}

我还检查了我的权限是否正确，我可以确认我包含了user_events权限。我认为我的问题更多地与我如何解析响应有关。

根据一条评论的要求，我还对事件进行了var_dump。以下是我收到的内容的快照。

object(Facebook'GraphObject)#5 (1) {
["backingData":protected]=>
array(2) {
["data"]=>
array(25) {
[0]=> object(stdClass)#6 (5) {
["id"]=> string(15) “…”
["name"]=> string(11) “..”.
[“location"]=> string(14) “…”
["start_time"]=> string(24) “…”

进度1:

我还尝试使用此代码，调用"data"属性，但仍然没有成功。

function facebook_get_events($facebookSession) {
        // make the API call and get array of event objects
        $events = (new FacebookRequest($facebookSession, 'GET', '/me/events')->execute()->getGraphObject();
        log("Got events from facebook " . count($events->getProperty('data')));
        foreach ($events->getProperty('data') as $event) {
           echo $event->getProperty('id');
        }
        return events;
}

上面的代码什么也没打印出来。

这是最简单的方法：

$eventResponse = (new FacebookRequest($session, 'GET', '/me/events'))->execute()->getResponse();
$events = $eventResponse->data;
foreach ($events as $event) {
    echo $event->name;
    //echo $event->id;
    //echo $event->name;
    //echo $event->start_time;
    //echo $event->timezone;
    //echo $event->location;
}

这是一种很好的方式：

类声明：

class GraphEventlist extends GraphObject implements Iterator 
{
    /**
     * @var GraphEvent[]
     */
    protected $backingData = array();
    public function __construct($raw)
    {
        foreach ($raw['data'] as $eventArray) {
            if ($eventArray instanceof 'stdClass) {
                $eventArray = get_object_vars($eventArray);
            }
            $this->backingData[$eventArray['id']] = $eventArray;
        }
    }
    public function current()
    {
        return $this->getProperty(key($this->backingData), 'GraphEvent');
    }
    public function key()
    {
        return key($this->backingData);
    }
    public function next()
    {
        next($this->backingData);
    }
    public function rewind()
    {
        reset($this->backingData);
    }
    public function valid()
    {
        return null !== key($this->backingData);
    }
}
class GraphEvent extends GraphObject
{
}

获取事件

$events = (new FacebookRequest($session, 'GET', '/me/events'))->execute()->getGraphObject('GraphEventlist');

迭代：

foreach ($events as $event) {
    echo $event->getProperty('name');
}

按ID:获取单个事件

var_dump($events->getProperty('6499**********4', 'GraphEvent'));