node结构

$node = object(stdClass)
  public 'nid' => string
  public 'type' => string
  public 'language' => string
  public 'uid' => string
  public 'status' => string
  public 'created' => string
  public 'changed' => string
  public 'comment' => string
  public 'promote' => string
  public 'moderate' => string
  public 'sticky' => string
  public 'tnid' => string
  public 'translate' => string
  public 'vid' => string
  public 'revision_uid' => string
  public 'title' => string
  public 'body' => string
  public 'teaser' => string
  public 'log' => string
  public 'revision_timestamp' => string
  public 'format' => string
  public 'name' => string
  public 'picture' => string
  public 'data' => string
  public 'path' => string
  public 'field_date' => 
    array
      0 => 
        array
          'value' => string
          'timezone' => string
          'timezone_db' => string
          'date_type' => string
  public 'field_images' => 
    array
      0 => 
        array
          'fid' => string
          'uid' => string
          'filename' => string
          'filepath' => string
          'filemime' => string
          'filesize' => string
          'status' => string
          'timestamp' => string
          'origname' => string
          'list' => string
          'data' => array
  public 'last_comment_timestamp' => string
  public 'last_comment_name' => null
  public 'comment_count' => string
  public 'taxonomy' => array
  public 'nodewords' => array