PHP SSE: Server-sent Events，一個(gè)簡單有效的庫，通過 PHP 實(shí)現(xiàn)了 HTML5 的服務(wù)器發(fā)送事件，用于實(shí)時(shí)從服務(wù)器推送事件到客戶端，比 Websocket 更容易。

要求：PHP 5.4 or later

示例代碼

Javascript demo

Client: receiving events from the server

//withCredentials=true: pass the cross-domain cookies to server-side
var source = new EventSource("http://127.0.0.1:9001/push.php", {withCredentials:true});
source.addEventListener("new-msgs", function(event){
    console.log(event.data);//get data
}, false);

PHP demo

Server: sending events from the server by pure php

include './vendor/autoload.php';

use Hhxsv5\SSE\SSE;
use Hhxsv5\SSE\Update;

header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');
header('Connection: keep-alive');
header('X-Accel-Buffering: no');//Nginx: unbuffered responses suitable for Comet and HTTP streaming applications

(new SSE())->start(new Update(function () {
    $id = mt_rand(1, 1000);
    $newMsgs = [
        [
            'id'      => $id,
            'title'   => 'title' . $id,
            'content' => 'content' . $id,
        ],
    ];//get data from database or servcie.
    if (!empty($newMsgs)) {
        return json_encode(['newMsgs' => $newMsgs]);
    }
    return false;//return false if no new messages
}), 'new-msgs');