Server Side Processing Array

kamusksn

Hello, I have a question about the syntax of the array before use the json encode function.

I'm using codeigniter as framework, I'm getting an object array from the query like this.

** print_r($data); **

Array
(
[0] => stdClass Object
(
[ID] => 1
[Partnum] => 00505
[Partnum_description] => XXXX
)
)

When following the syntax I'm doing this, I'm getting the following error
Requested unknown parameter '0' for row 0, column 0. For more information about this error, please see http://datatables.net/tn/4

$json_data = array(
"draw" => intval($_REQUEST['draw']),
"recordsTotal" => count($data),
"recordsFiltered" => count($data),
"data" => $data
);

echo json_encode($json_data);

so I created a new array without object, I'm not getting anymore the error but the results are not shown
my code is like this

foreach($data as $index => $k)
{
$values = array (
'ID' => $k->ID,
'Partnum' => $k->Partnum,
'Partnum_description' => $k-> Partnum_description
);
}

    $json_data = array(
                    "draw"            => intval($_REQUEST['draw']),
                    "recordsTotal"    => count($values),
                    "recordsFiltered" => count($values),
                    "data"            => $values
                );

    echo json_encode($json_data);

How should be the array format in order to use the json encode function?, thank you.