PHP swoole实现redis订阅和发布

前戏：实现用户下单，服务器通知后台接收订单...类似美团外卖

1.首先要实现一个订阅程序

$result = $client->connect('127.0.0.1', 6379, function (swoole_redis  $client, $result) {
        $client->subscribe('order');    //实现订阅order
    });

2.客户下单会产生一个publish推送到订阅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]);
        }
    });

完整代码

<?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');    //实现订阅order
    });
});

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

$server->on('close', function ($serv, $fd) {
    //处理关闭
});
$server->start();