$products = array();
$products [] = array("Örnek ürün 1", "18.00", 1);
$products [] = array("Örnek ürün 2", "18.00", 1);
$products [] = array("Örnek ürün 3", "18.00", 1);
$user_basket = base64_encode(json_encode($products ));

$products= array();
foreach ($basket_producst as $product){
    $products[] = array($product->name, $product->vat, 1);
}