数据库连接不成功SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known 
连接参数
link: mysql:host=bdm263683285.my3w.com;port=3306;dbname=bdm263683285_dbuser:bdm263683285pass:RONGfu@123.

DB::getone()

Array
(
    [0] => select * from @pf_config
)

Array
(
    [typeof] => 1
    [kw] => 投资创业
    [sort] => time
    [financing_mode] => 
    [industries] => 33
    [area_type] => 
    [financing_amount] => 
    [project_phase] => 
)

 20.

 21.

 22.          $config = DB::getone('select * from @pf_config');

 23.          $this->assign("config", $config);

 24.          $this->assign("web_site", WEB_SITE);