function __construct($keyword, $page)
{
parent::__construct($keyword);
$this->_dom = new simple_html_dom();
$this->_dom->load($this->get($page));
// convert to dom
// get total number of this keyword
$this->_total = $this->_dom->find('#scd_num', 0)->innertext;
// get total number of this page
$this->_number = $this->_dom->find('.wx-rb3');
$this->_number = count($this->_number);
// find results
$this->_dom = $this->_dom->find('.results', 0);
}
function __construct($url)
{
// 如果数据库中可以查到对应url的配置，则载入，否则新建数据并载入
parent::__construct($url);
}
