Question

我正处于MQTT-PHP之旅的初级阶段。我在互联网上找到的关于这个主题的教程很少。我按照说明安装了必要的包。我可以执行示例代码并获得预期的结果。但发布者客户端方案对我不起作用。

发布商代码：

    <?php
    $client = new Mosquitto\Client();
    $client->onConnect('connect');
    $client->onDisconnect('disconnect');
    $client->onSubscribe('subscribe');
    $client->onMessage('message');
    $client->connect('localhost', 1883, 60);
    $client->loop();
    $message = "Message sent by natarajan at " . date("Y-m-d H:i:s");
    $mid = $client->publish('/hello', $message, 2, True);
    echo "Sent message ID: {$mid}\n";
    $client->$client->loop(2,10); 
    function connect($r) {
        echo "I got code {$r}\n";
    }
    function subscribe() {
        echo "Subscribed to a topic\n";
    }
    function message($message) {
        printf("Got a message ID %d on topic %s with payload:\n%s\n\n", $message->mid, $message->topic, $message->payload);
    }
    function disconnect() {
        echo "Disconnected cleanly\n";
    }
    ?>

出版商O / P：

    I got code 0 Sent message ID: 1

订户代码：

<?php
$client = new Mosquitto\Client();
$client->onConnect('connect');
$client->onDisconnect('disconnect');
$client->onSubscribe('subscribe');
$client->onMessage('message');
$client->connect("localhost", 1883, 60);
$client->subscribe('/#', 2);
$client->loop(2,10);
function connect($r) {
    echo "I got code {$r}\n";
}
function subscribe() {
    echo "Subscribed to a topic\n";
}
function message($message) {
    printf("Got a message ID %d on topic %s with payload:\n%s\n\n", $message->mid, $message->topic, $message->payload);
}
function disconnect() {
    echo "Disconnected cleanly\n";
}

订阅者O / p：

I got code 0 Subscribed to a topic

但我既没有问题也没有信息。提前谢谢。

Answer 1

您运行的mqtt经纪人的版本和风格是什么？您可以从命令行成功发布和订阅主题/消息吗？不确定php版本处于什么状态，但它看起来并没有被积极维护（有人在这里纠正我！）

使用MQTT PHP的Publisher订阅者模型未接收已发布的消息

1 个答案: