public function getAllCommentNumber()
 {
     $str = parent::getAllCommentNumber();
     if ($str) {
         $p = '/(\\d+)/';
         preg_match($p, $str, $out);
         $this->_allCommentNumber = isset($out[1]) ? $out[1] : 0;
     }
     return $this->_allCommentNumber;
 }