Workerman communicates with hardware, how to send more than 3 packets at regular intervals? Such as packet 1. The interval is 3 seconds, packet 2 is sent, and packet 3 is sent at an interval of 3 seconds.

three material packages should be sent at regular intervals

Workerman php
Jul.07,2021

send with for loop, or directly three calls to send. sleep 3 seconds each time.
it doesn't make much sense for you to do this. You can send it in three seconds locally, but the receiver doesn't have to build it in three seconds. It has something to do with the network.

receive a message and write a timer reply three times

if workerman has a timer, use timer. 

use Workerman\Lib\Timer;
use Workerman\Worker;

$worker = new Worker('tcp://0.0.0.0:8181');
$worker->onMessage = function($con, $data){
    $con->send('1');
    Timer::add(3, function()use($con){
        $con->send('2');
    }, null, false);
    Timer::add(6, function()use($con){
        $con->send('3', null, false);
    });
};
Worker::runAll();

cli mode is recommended for scheduled tasks

can be extended with swoole workerman event, etc.

socket itself makes use of event-driven io multiplexing performance such as eventloop. Of course, the interval can be used with relevant timing

.

there are two simple ways

  1. while endless loop 

    <?php
$data = ['1','2','3'];
$i    = 0;
while(true){
    sendData($data[i]);
    $iPP;
    if($i>count($data)){
        $i=0;
    }
    sleep(3)
}
  2. scheduled tasks in seconds can use workman or swoole

Previous: < link rel= "stylesheet" href= ". / layui/css/layui.css" > "." Who do you represent?

Next: How to clear (reset) all data in dav.js

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1ea6143-47b7d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea6143-47b7d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?