PHP的mqtt发布和订阅demo：原生、thinkphp、PhalApi

一、原生php的mqtt订阅和发布demo

   1、发布 pub.php

<?php

$client = new Mosquitto\Client();
$client->connect(MQTT_IP, MQTT_PORT, 5);//MQTT_IP是mqtt服务器ip  MQTT_PORT一般是1883
$client->loop();
$client->publish($topic, $message, 1, 0);
$client->disconnect();//断开链接
unset($client);


?>

2、订阅 sub.php

<?php

$client = new Mosquitto\Client();
$client->onMessage('message');    //回调函数 
$client->connect(IP, 1883, 5);
$client->subscribe('订阅主题', 1);
$payload='';

$client->loop();
$client->publish('发布主题', "发布信息", 1, 0);
$nowtime=time();

while(true){
        $client->loop();
        global $payload;
        if(!empty($payload)){
        	
                echo $payload;  //订阅到的消息
                break;
        }
       if($nowtime==(time()-2)){
		break;
	}
}

$client->unsubscribe('订阅主题');//取消订阅
$client->disconnect();//断开链接
unset($client);


function message($message) {
//printf("Got a message ID %d on topic %s with payload:\n%s\n\n", $message->mid, $message->topic, $message->payload);
global $payload;
$payload=$message->payload;
}

二、Thinkphp3.2 的Demo

Home/Common/function.php

<?php

function mqtt_message($message) {
//	printf("Got a message ID %d on topic %s with payload:\n%s\n\n", $message->mid, $message->topic, $message->payload);
	session("payload",$message->payload);
}

function mqtt_mosquitto($phy_addr_gid,$msg,$timeout=2){
	$client = new \Mosquitto\Client();
	$client->onMessage('mqtt_message');
	$client->connect(MQTT_IP, MQTT_PORT, 5);
	$client->subscribe(MQTT_SUB, 1);

	$client->loop();
	$client->publish($phy_addr_gid, $msg, 1, 0);

	$nowtime=time();
	while(true){
	        $client->loop();
	        if(session("payload")){
	        	$payload=session("payload");
	        	session("payload",null);
	        	return $payload;
	            break;
	        }
	        if ($nowtime==(time()-$timeout)) {
				return "timeout";
				break;
			}
	}
	$client->unsubscribe(MQTT_SUB);
	$client->disconnect();
	unset($client); 
}

三、PhalApi框架的订阅demo

对这个框架不太熟，订阅里的回调函数不能直接套用本小白真的很头疼，开发文档里只提了一句需要将自定义的回调函数名加入白名单，看了半天还是不会，有人懂的话希望评论里能指点一二，谢谢

mqtt.php

class Api_mqtt extends PhalApi_Api
{

    public function getRules()
    {
        return array(
        );
    }

    
    function mqtt_sub(){

	$client = new \Mosquitto\Client();
	$client->onMessage(function($m){
		$_SESSION['test']=$m->payload;
	});
	$client->connect('服务器IP', 1883, 5);
	$client->subscribe('123', 1);//123 订阅主题

	$client->loop();
	$client->publish('123', '456', 1, 0);//123 发布主题  456发布的消息   订阅自己发布的消息没毛病2333
  
	$nowtime=time();

	while(true){
	        $client->loop();
		if ($_SESSION['test']!==null){
			$b=$_SESSION['test'];
			$_SESSION['test']=null;
			return $b;
			break;
		}
	        if ($nowtime==(time()-2)) {
				return "timeout";
				break;
		}

	}

	$client->unsubscribe('123'); //取消订阅
	$client->disconnect();
	unset($client);
	
    }

}