将SQL查询的结果从PHP传递给Javascript数组

I am used to update a javaScript variable manually each day this way

<script>
    var data = [
            ['Austria','IBM','8284927','UF93NV', '10'],
            ['Spain','Dell','1098193','MN87QA', '4'],
            ...
          ];
    //rest of my code
<script>

I want to pass the values to this variable from an SQL query result using PHP so that I don't need to type several lines each day. I have created this PHP file where I am connecting to my database and storing the result of the query in an array.

 <?php   
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$ser="*******";
$db="*******"; 
$user="*******"; 
$pass="*******";

$dbDB = new PDO("odbc:Driver=ODBC Driver 13 for SQL Server;Server=*******;Database=*******;Port=1456", $user, $pass);

$sth = $dbDB->prepare("SELECT top 2 [Country],[Customer Name],[Purchase Number],[Part Number],[Qty] FROM *******");
$sth->execute();

$result = $sth->fetchAll();

print_r($result);
 ?>  

It's working fine as you see below the result

Now I want to pass the values in the variable $result to my variable data inside the javaScript tag using jason_encode. I added the following code in the same PHP file

<script type="text/javascript">
    var data = <?php echo json_encode($result); ?>;
    alert(data.toString());
</script>

But when I added the alert to see the value of my variable data I receive this

and my variable should be this way

var data = [
['Austria','Tech Data Service GmbH','3508224010','01HV707', '4'],
['Austria','Tech Data Service GmbH','3508314557','40M7578', '1']
];

Any advises please what am I missing ? Thank you.

The data is already there in your variable. To check how it your objects look like, you could use alert(JSON.stringify(data)).

The contents of your data variable won't be arrays in JavaScript as associative arrays in PHP are objects in JSON.

To get the result you want, the simplest solution would be to use $result = $sth->fetchAll(PDO::FETCH_NUM);.