将Javascript数组传递给PHP文件

参见英文答案 > How to pass JavaScript variables to PHP?12个
> Passing a JavaScript Value to a PHP Variable (With Limitation)3个
所以我知道Javascript是客户端的,PHP是服务器端的,这使事情复杂化,但我想知道如何去做.

我的javascript代码(在HTML文件中)有一个数组,当用户点击我的提交按钮时,我希望页面通过该数组发送到我的PHP页面,然后将该日期转换为sql数据库.

有一个简单的方法来做到这一点？我的数组声明如下var markers = [];它只是代码的javascript部分中的变量.

我已经看了很多关于此的帖子,但是所有的解决方案都不适合我需要做的事情,或者需要对我现在能做的事情进行太多的改变.我对AJAX或JSON并不熟悉(不确定究竟是什么).

我的Javascript是：

var markers = [];

function placeMarker(location) {
        var clickedLocation = new google.maps.LatLng(location);
        var name = document.getElementById("checkname").value;
        var description = document.getElementById("description").value;


        var marker = new google.maps.Marker({
            position: location,map: map,title: name,// This may cause a problem when reloading and editing an existing tour
            // url was found at: http://biostall.com/adding-number-or-letters-to-google-maps-api-markers
            icon: 'http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld=' + markerId + '|FE6256|000000'
        });

        marker.setMap(map);
        markers.push([markerId,name,marker.getPosition().lat(),marker.getPosition().lng(),description]);
        //alert("" + markers);
        markerId = markerId + 1;
    }

    google.maps.event.addListener(map,'click',function(event) {
        placeMarker(event.latLng);
    });

    google.maps.event.addListener(marker,"click",function() {
        map.removeOverlay(marker);
        marker.setMap(map);
    });
} 

window.onload = function() {
    var form = document.getElementById('theform');
    form.addEventListener('submit',function(){
        var markersField = document.getElementById('markers');
        markersField.value = JSON.stringify(markers);
    });
}

我的HTML是：

<form action="portal.PHP" method="post" id="theform">
    <input type="hidden" id="markers" name="markers">
    <button>Submit</button>
</form>

在我的portal.PHP文件中,我有：

$markers = json_decode($_POST['markers']);
echo $markers;

尽管我知道数组中有元素,但在PHP页面中没有打印出来,这让我相信数组没有被传递过.

<form method="post" id="theform">
    <!-- your existing form fields -->

    <input type="hidden" id="markers" name="markers">

    <button>Submit</button>
</form>

window.onload = function() {
    var form = document.getElementById('myform');
    form.addEventListener('submit',function(){
        var markersField = document.getElementById('markers');
        var markers = [1,2,3];
        markersField.value = JSON.stringify(markers);
    });
}

$markers = json_decode($_POST['markers']);