i made a script , exactly like wordpress widgets page and u can drag and drop objects

this is my jquery script :

<script type="text/javascript" >$(function(){
    $('.widget')
    .each(function(){
        $(this).hover(function(){
            $(this).find('h4').addClass('collapse');
        }, function(){
        $(this).find('h4').removeClass('collapse');
        })
        .find('h4').hover(function(){
            $(this).find('.in-widget-title').css('visibility', 'visible');
        }, function(){
            $(this).find('.in-widget-title').css('visibility', 'hidden');
        })
        .click(function(){
            $(this).siblings('.widget-inside').toggle();
            //Save state on change of collapse state of panel
            updateWidgetData();
        })
        .end()
        .find('.in-widget-title').css('visibility', 'hidden');
    });

    $('.column').sortable({
        connectWith: '.column',
        handle: 'h4',
        cursor: 'move',
        placeholder: 'placeholder',
        forcePlaceholderSize: true,
        opacity: 0.4,
        start: function(event, ui){
            //Firefox, Safari/Chrome fire click event after drag is complete, fix for that
            if($.browser.mozilla || $.browser.safari)
                $(ui.item).find('.widget-inside').toggle();
        },
        stop: function(event, ui){
            ui.item.css({'top':'0','left':'0'}); //Opera fix
            if(!$.browser.mozilla && !$.browser.safari)
                updateWidgetData();
        }
    })
    .disableSelection();
});

function updateWidgetData(){
    var items=[];
    $('.column').each(function(){
        var columnId=$(this).attr('id');
        $('.widget', this).each(function(i){
            var collapsed=0;
            if($(this).find('.widget-inside').css('display')=="none")
                collapsed=1;
            //Create Item object for current panel
            var item={
                id: $(this).attr('id'),
                collapsed: collapsed,
                order : i,
                column: columnId
            };
            //Push item object into items array
            items.push(item);
        });
    });
    //Assign items array to sortorder JSON variable
    var sortorder={ items: items };

    //Pass sortorder variable to server using ajax to save state
$.post("blocks.php"+"&order="+$.toJSON(sortorder), function(data){
$('#console').html(data).fadeIn("slow");
 });

}

</script>

main part is saving object orders in table and this is my php part :

function stripslashes_deep($value) {
$value = is_array($value) ? array_map('stripslashes_deep', $value) :
stripslashes($value);
return $value; }


$order = $_GET['order'];
$order = sql_quote($order);
if(empty($order)){
echo "Invalid data";
exit;
}

global $db,$prefix;
if (get_magic_quotes_gpc()) {

$_POST = array_map('stripslashes_deep', $_POST);
$_GET = array_map('stripslashes_deep', $_GET);
$_COOKIE = array_map('stripslashes_deep', $_COOKIE);
$_REQUEST = array_map('stripslashes_deep', $_REQUEST);
}
$data=json_decode($order);
foreach($newdata->items as $item)
{
    //Extract column number for panel
    $col_id=preg_replace('/[^\d\s]/', '', $item->column);
    //Extract id of the panel
    $widget_id=preg_replace('/[^\d\s]/', '', $item->id);
    $sql="UPDATE blocks_tbl SET bposition='$col_id', weight='".$item->order."' WHERE id='".$widget_id."'";
    mysql_query($sql) or die('Error updating widget DB');
}
print_r($order);

now forexample the output is this :

items\":[{\"id\":\"item26\",\"collapsed\":1,\"order\":0,\"column\":\"c\"},{\"id\":\"item0\",\"collapsed\":1,\"order\":0,\"column\":\"i\"},{\"id\":\"item0\",\"collapsed\":1,\"order\":1,\"column\":\"i\"},{\"id\":\"item1\",\"collapsed\":1,\"order\":2,\"column\":\"i\"},{\"id\":\"item3\",\"collapsed\":1,\"order\":3,\"column\":\"i\"},{\"id\":\"item16\",\"collapsed\":1,\"order\":4,\"column\":\"i\"},{\"id\":\"item0\",\"collapsed\":1,\"order\":5,\"column\":\"i\"},{\"id\":\"item6\",\"collapsed\":1,\"order\":6,\"column\":\"i\"},{\"id\":\"item17\",\"collapsed\":1,\"order\":7,\"column\":\"i\"},{\"id\":\"item19\",\"collapsed\":1,\"order\":8,\"column\":\"i\"},{\"id\":\"item10\",\"collapsed\":1,\"order\":9,\"column\":\"i\"},{\"id\":\"item11\",\"collapsed\":1,\"order\":10,\"column\":\"i\"},{\"id\":\"item0\",\"collapsed\":1,\"order\":0,\"column\":\"l\"},{\"id\":\"item5\",\"collapsed\":1,\"order\":1,\"column\":\"l\"},{\"id\":\"item8\",\"collapsed\":1,\"order\":2,\"column\":\"l\"},{\"id\":\"item13\",\"collapsed\":1,\"order\":3,\"column\":\"l\"},{\"id\":\"item21\",\"collapsed\":1,\"order\":4,\"column\":\"l\"},{\"id\":\"item28\",\"collapsed\":1,\"order\":5,\"column\":\"l\"},{\"id\":\"item7\",\"collapsed\":1,\"order\":0,\"column\":\"r\"},{\"id\":\"item20\",\"collapsed\":1,\"order\":1,\"column\":\"r\"},{\"id\":\"item15\",\"collapsed\":1,\"order\":2,\"column\":\"r\"},{\"id\":\"item18\",\"collapsed\":1,\"order\":3,\"column\":\"r\"},{\"id\":\"item14\",\"collapsed\":1,\"order\":4,\"column\":\"r\"}]}

question is how can i find out column_id or order

im a little bit confused