HTML5与php实现消息推送功能
1、html页面basic_sse.html
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title>数据推送</title>
</head>
<body>
<pre >
Initializing...
</pre>
<script type="text/javascript">
if(typeof(EventSource)!=="undefined")
{
var source = new EventSource("/sjts/index.php");
source.onmessage=function(event){
document.getElementById("result").innerHTML=event.data + "<br />";
};
}
else
{
document.getElementById("result").innerHTML="Sorry, your browser does not support server-sent events...";
}
</script>
</body>
</html>2、php页面index.php
<?php
header('Content-Type:text/event-stream');//通知浏览器开启事件推送功能
header('Cache-Control:no-cache');//告诉浏览器当前页面不进行缓存
//$time = date('r');
//echo "data: The server time is: {$time}\n\n";
$mysqli = new MySQLi('localhost','root','','test');
$sql = 'select ac_id from article_class where ac_name="11";';
$result = $mysqli->query($sql);
while($row = $result->fetch_assoc()){
$time = $row['ac_id'];
echo "data: The server time is: {$time}\n\n";
}
ob_flush();//刷新
flush();//刷新
?>总结：通过改变数据库ac_id自动，前端不刷新即可实施改变数据
