本文实例讲述了php+jquery ajax实现的实时刷新显示数据功能。分享给大家供大家参考，具体如下：
创建数据表：demo
-- -- 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');
服务器文件：demo.php
<?php
$mysqli = new mysqli("localhost","root","","test");
$mysqli->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.'}';
显示数据网页: fresh.html
<html>
<head>
<meta charset='utf-8'>
<title>hello</title>
</head>
<body>
<script src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script>
<script>
function check(){
$.ajax({
type:"get",
url:"./demo.php",
datatype:"json",
success:function(data){
if(data.success){
var count = data.info.length;
for(i=0;i<count;i++){
var dom = "<tr align='center' id='"+data.info[i].id+"'><td>"+data.info[i].id+"</td><td>"+data.info[i].name+"</td></tr>";
var tag = '#'+data.info[i].id;
if(!$(tag).length){
$("#info").append(dom);
}
}
}else{
alert('error');
}
},
error:function(res){
alert(res.status);
}
});
}
window.setinterval(check, 1000); //每秒执行一次
</script>
<body>
<div style='width:600px;margin:0 auto;'>
<table border='1' width="600px">
<thead>
<tr><th>id</th><th>name</th></tr>
</thead>
<tbody id='info'>
<tr align='center' id='111'><td>111</td><td>测试</td></tr>
</tbody>
</table>
</div>
</body>
</html>
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