[jQuery] ajax data

[jQuery] ajax data


Hi to all
I got the following problem
I want to send to PHP server nested json using ajax.
{item1:'one',
item2:'eeee',
item3:[{item31:'sdf',
item32:'sdfs'}]
}
My code:
$.ajax({
                url: "translation_edit.php",
                type: "post",
                data: {item1:'one',item2:'eeee',item3:
[{item31:'sdf',item32:'sdfs'}]},
                 success: function(data) {
                    alert('Success');},
                complete: function () {
                    alert('Complete');
                },
                error: function (xhr, ajaxOptions, thrownError){
         alert(xhr.valueOf());
                }
            });
But result on server(PHP) is as follows:
Array
(
[item1] => one
[item2] => eeee
[item3] => [object Object]
)
My code on PHP server:
<?php
$handle = fopen("data.txt", "w");
fwrite($handle, print_r($_POST,true));
fclose($handle);
?>
How to get rid of [object Object] and get item31 and item32?
Greetings
Majkel