从Google日历中检索事件

Question

我正在尝试检索Google日历的XML数据。认证和检索都可以。但是，当我检索事件时，gd：数据不包含在协议参考文档中（http://code.google.com/apis/calendar/data/2.0/developers_guide_protocol.html#RetrievingWithoutQuery）

我遇到的一些错误消息取决于我如何引用“when”节点具有属性“startTime”（我在此轶事中的最终目标）如下：

致命错误：调用成员函数的属性（）非线对象在.../googlecalendarwrapper.php上线226 它看起来像'startTime'=> (string) $cal->when->attributes()->startTime,

GoogleCalendarWrapper_Model :: getEventsList（）[googlecalendarwrapper-model.geteventslist]：当它看起来像01时，节点不再存在（）[function.strval]

strval：节点不再存在时，它看起来像'startTime'=> strval($cal->when->attributes()),和'startTime'=> strval($cal->when->attributes('startTime')),

代码如下所示：

  $xml = new SimpleXMLElement($this->get($url, $header)); 

      $calendars = array(); 
      foreach ($xml->entry as $cal){ 
        $calendars[] = array(       
                 'id'=>strval($cal->id), 
                 'published'=>strval($cal->published), 
                 'updated'=>strval($cal->updated), 
                 'title'=>strval($cal->title), 
                 'content'=>strval($cal->content), 
                 'link'=>strval($cal->link->attributes()->href), 
                 'authorName'=>strval($cal->author->name), 
                 'authorEmail'=>strval($cal->author->email), 
                 'startTime'=> strval($cal->when->attributes()), 
                 ); 
      } 

XML：

 [0] => SimpleXMLElement Object 
      (
       [id] => http://www.google.com/calendar/feeds/braden.keith%40smartersys.com/private/full/7li4mr2c81mub1hcoqktn73fbo 
       [published] => 2010-06-08T17:17:43.000Z 
       [updated] => 2010-06-08T17:17:43.000Z 
       [category] => SimpleXMLElement Object 
        (
         [@attributes] => Array 
          (
           [scheme] => http://schemas.google.com/g/2005#kind 
           [term] => http://schemas.google.com/g/2005#event 
          ) 

        ) 

       [title] => title 
       [content] => content 
       [link] => Array 
        (
         [0] => SimpleXMLElement Object 
          (
           [@attributes] => Array 
            (
             [rel] => alternate 
             [type] => text/html 
             [href] => https://www.google.com/calendar/hosted/smartersys.com/event?eid=N2xpNG1yMmM4MW11YjFoY29xa3RuNzNmYm8gYnJhZGVuLmtlaXRoQHNtYXJ0ZXJzeXMuY29t 
             [title] => alternate 
            ) 

          ) 

         [1] => SimpleXMLElement Object 
          (
           [@attributes] => Array 
            (
             [rel] => self 
             [type] => application/atom+xml 
             [href] => https://www.google.com/calendar/feeds/braden.keith%40smartersys.com/private/full/7li4mr2c81mub1hcoqktn73fbo 
            ) 

          ) 

         [2] => SimpleXMLElement Object 
          (
           [@attributes] => Array 
            (
             [rel] => edit 
             [type] => application/atom+xml 
             [href] => https://www.google.com/calendar/feeds/braden.keith%40smartersys.com/private/full/7li4mr2c81mub1hcoqktn73fbo/63411700663 
            ) 

          ) 

        ) 

       [author] => SimpleXMLElement Object 
        (
         [name] => Braden Keith 
         [email] => braden.keith@smartersys.com 
        ) 

      ) 

Answer 1

根据对这篇文章：http://www.sitepoint.com/blogs/2005/10/20/simplexml-and-namespaces/ 你必须用SimpleXM有点不同的名称空间LElement。解决方案如下：

  $xml = new SimpleXMLElement($this->get($url, $header)); 
      $xml->asXML(); 

      $calendars = array(); 
      foreach ($xml->entry as $cal){ 
        $ns_gd = $cal->children('http://schemas.google.com/g/2005'); 
        $calendars[] = array(       
                 'id'=>strval($cal->id), 
                 'published'=>strval($cal->published), 
                 'updated'=>strval($cal->updated), 
                 'title'=>strval($cal->title), 
                 'content'=>strval($cal->content), 
                 'link'=>strval($cal->link->attributes()->href), 
                 'authorName'=>strval($cal->author->name), 
                 'authorEmail'=>strval($cal->author->email), 
                 'startTime'=> strval($ns_gd->when->attributes()->startTime), 
                 ); 
      } 

请注意$ns_gd = $cal->children('http://schemas.google.com/g/2005'); - 它定义了命名空间。然后从那里，$ns_gd->when->attributes()->startTime从命令startTime获取来自gd的属性：

男人这是一个血腥的2天。但我知道了。希望这可以帮助某个人。