运行 Php 脚本不断，如果作为 windows 服务连接到互联网，它将数据插入 xampp 服务器

Question

我正在开发一个桌面应用程序，它将离线存储数据，但只要桌面获得连接，php 脚本就会检测到它（cron 作业）并将其上传到在线服务器，如下所示：

while(true){
    if(connected == true){
        // run code;
    else{
        // wait to get connection
    }
}

Answer 1

嗨，扎基·穆罕默德·穆拉，

我自己做了一些测试，得出了下面这段代码
运行此处的代码片段将不起作用，因为这是一个沙箱，无法访问此处的本地存储。

确保在您的代码中包含 Jquery

<script  
src="https://code.jquery.com/jquery-3.4.1.js" 
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous">
</script>

那么实际的功能就是：

function processData(online){
        if(online == true){
            //My connection is online so I can execute code here
                    //If data is stored locally, read it and post it with an $.ajax POST
                    //I can loop through all the data and insert it per found row of data
                        for(var i=0, len=localStorage.length; i<len; i++) {
                            var key = localStorage.key(i);
                            var value = localStorage[key];
                                $.ajax({  
                                type: 'POST',  
                                url: 'PATH/TO/SCRIPT.php', 
                                data: { column: key, value: value },
                                success: function(response) {
                                    //The insert was succesful
                                    content.html(response);
                                }
                               });
                        }
                            
        }else{
            //Create your own loop here and fill data accordingly
            for(i = 0; i < 12; i++){
                localStorage.setItem("lastname" + i, "Smith");
                localStorage.setItem("firstname" + i, "John");
                localStorage.setItem("age" + i, "22");
                localStorage.setItem("job" + i, "Developer");    
            }
        }
    }

最后 window.setInterval() 到运行每 x 秒一个函数（记住 settimeout 中的 1 秒 = 1000）

<script>
window.setInterval(function(){
        var online = navigator.onLine;
        processData(online);
    }, 1000);
</script>

希望这对您的探索有所帮助！
我使用的来源：

https://medium.com/@Carmichaelize/checking-for-an-online-connection-with-javascript-5de1fdeac336
Ajax passing data to php script
https://www.w3schools.com/html/html5_webstorage.asp
https://www.taniarascia.com/how-to-use-local-storage-with-javascript/
Get HTML5 localStorage keys
HTML5 localStorage getting key from value
What's the easiest way to call a function every 5 seconds in jQuery?

运行 Php 脚本不断，如果作为 windows 服务连接到互联网，它将数据插入 xampp 服务器

Run Php script constantly and if connected to internet as windows service which inserts data into xampp server

php

mysql

windows-services