Question

I’m trying to post an array to another file to be processed. The array is below and it populates rows properly. I have it initialized at the beginning of the script tag to make it global.
In javascript:

var locationsall = new Array();
locationsall[counter] = new Array();
locationsall[counter][0] = address;
locationsall[counter][1] = lat;
locationsall[counter][2] = lng;

In my form i try to serialzie it and post it

 <input type="hidden" name="result" value="<?php echo serialize($locationsall); ?>">

When i try to unserialize it, it doesn’t have anything..

    $locations = unserialize($_POST['result']);

What am i doing wrong here?

Answer 1

When you are updating client-side data via jQuery, you need to set the value of result to whatever it is that you want to pass through. You can serialize a JS object using jQuery.param(), so you can then pass through JSON-encoded data to PHP. When processing the post data you would then need to decode the JSON data in $_POST['result']

JS

var test = new Array('a', 'b');
var data = $.param(test);
$('#result').val(data);
...

PHP

if (isset($_POST['result'])) {
    $data = (array) json_decode($_POST['result']);
}