public function getPromotion()
 {
     $str = parent::getPromotion();
     $p = '/更新时间:(.*)/';
     preg_match($p, $str, $out);
     $this->_promotion = isset($out[1]) ? $out[1] : "";
     return $this->_promotion;
 }
 public function getPromotion()
 {
     $str = parent::getPromotion();
     if (!$str) {
         $filter = '//ul[@class="cont02 mb10"]/li[4]/text()||1';
         $str = $this->_getRegexpInfo($filter, $this->getContent());
     }
     $this->_promotion = trim(str_replace("注册时间:", "", $str));
     return $this->_promotion;
 }