thinkphp5 连接多个数据库 $list = Db::connect('mysql://root:123456@127.0.0.1:3306/zfb2017#utf8')-table('wxq_user')-select();
$list = Db::connect('mysql://root:123456@127.0.0.1:3306/zfb2017#utf8')->table('wxq_user')->select();
$list = Db::connect('mysql://root:123456@127.0.0.1:3306/zfb2017#utf8')->table('wxq_user')->select();