PHP swoole實現redis訂閱和發布

前戲：實現用戶下單，服務器通知后台接收訂單...類似美團外賣

1.首先要實現一個訂閱程序

$result = $client->connect('127.0.0.1', 6379, function (swoole_redis  $client, $result) {
		$client->subscribe('order');    //實現訂閱order
	});

2.客戶下單會產生一個publish推送到訂閱order中

3.websocket推送

$client->on('message', function (swoole_redis $client, $result) use ($server,$request) {
		if ($result[0] == 'message'){
			$server->push($request->fd, $result[2]);
		}
	});

完整代碼

<?php
$server = new swoole_websocket_server("0.0.0.0", 9533);
$server->on('open', function ($server, $request) {
	$client = new swoole_redis;
	$client->on('message', function (swoole_redis $client, $result) use ($server,$request) {
		if ($result[0] == 'message'){
			$server->push($request->fd, $result[2]);
		}
	});
	$result = $client->connect('127.0.0.1', 6379, function (swoole_redis  $client, $result) {
		$client->subscribe('order');    //實現訂閱order
	});
});

$server->on('message', function (swoole_websocket_server $server, $frame) {
	$server->push($frame->fd, "areyouok");
});

$server->on('close', function ($serv, $fd) {
	//處理關閉
});
$server->start();