html5 + php 實現實時推送消息

時間 2019-11-10

標籤 html5 html php 實現實時推送消息欄目 HTML5 简体版

原文原文鏈接

html頁面basic_sse.htmljavascript

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>數據推送</title>
</head>
<body>
    <pre id="result">
        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>

php頁面index.phpphp

<?php
    header('Content-Type:text/event-stream');//通知瀏覽器開啓事件推送功能
    header('Cache-Control:no-cache');//告訴瀏覽器當前頁面不進行緩存

    //$time = date('r');
    //echo "data: The server time is: {$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
?>

總結：經過改變數據庫ac_id自動，前端不刷新便可實施改變數據html