jquery php如何实现实时数据更新

-- -- 表的结构 `demo` -- CREATE TABLE IF NOT EXISTS `demo` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) COLLATE utf8_bin NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin AUTO_INCREMENT=5 ; -- -- 转存表中的数据 `demo` -- INSERT INTO `demo` (`id`, `name`) VALUES (1, '雷军'), (2, '马化腾'), (3, '李彦宏'), (4, '马云');

set_charset('utf8'); $query = 'SELECT * FROM demo'; $result = $mysqli->query($query); $arr = $result->fetch_all(MYSQLI_ASSOC); $info = json_encode($arr); echo $json = '{"success":true,"info":'.$info.'}';

    
     
 
 
 
id
name
 
 
 
111
测试