PHP SSEPHP 实现 HTML5 的服务器发送事件
PHP SSE: Server-sent Events,一个简单有效的库,通过 PHP 实现了 HTML5 的服务器发送事件,用于实时从服务器推送事件到客户端,比 Websocket 更容易。
要求:PHP 5.4 or later
示例代码
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');
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