pass data from joined table

I have built an eloquent query for inner join of two tables. I am getting data from the database, debugged using dump($ordered_books);

function fetchData()
    {
        $ordered_books = DB::table('ordered_books')
        -> join('books', 'books.id','=','ordered_books.BookID')
        -> select('books.BookName', 'ordered_books.BilledNum','ordered_books.BilledDate','ordered_books.Qunatity',
        'ordered_books.Price', 'ordered_books.BillPaid', 'ordered_books.Remarks' )
        -> get()->toArray();

        dump($ordered_books);

        return compact('ordered_books');
    }

But when I pass the data to view page, I am getting error:

Cannot use object of type stdClass as array

How to solve this error?

View page block

@foreach($ordered_books as $data)
 <tr>
     <td>  </td>
     <td>  </td>
     <td>  </td>
     <td>  </td>
     <td>  </td>
     @if($data['BillPaid'] === 1)
                <td>PAID</td> 
            @else
                <td style="color:red">DUE</td>
            @endif
     <td>  </td>
 </tr>
@endforeach

via Chebli Mohamed