Javascript 带有产品id的php echo不会同时显示在html文件中

我有两个php代码和两个不同的

产品id

。如果我选择代表2个id之一的块，然后选择代表剩余产品id的块，则此代码将仅显示最后选择的

产品id

此代码用于将产品添加到购物车。因此，当a选择了id为

product\u id\u subscribtion

的产品，然后我选择了id为

product\u id\u separate

的产品时，它将只显示id为

product\u id\u separate

的产品

顺便说一句，我使用get方法来形成

$\u COOKIE

：

<?php    

    $getUsers = $dbh->prepare("SELECT * FROM productssubscription WHERE product_id = ?");
    $getUsers->execute(array($_COOKIE['product_id_subscribtion']));
    $users = $getUsers->fetchAll();

    foreach ($users as $user) {
        echo "<h1>" . $user['amount'] . " Panty's per maand"   . "</h1>";
        echo "<h1>" . "Prijs: " . $user['price'] . "</h1>";
  }
    ?>

还有这个

<?php    

    $getUsers = $dbh->prepare("SELECT * FROM productsseperate WHERE product_id = ?");
    $getUsers->execute(array($_COOKIE['product_id_seperate']));
    $users = $getUsers->fetchAll();

    foreach ($users as $user) {
        echo "<h1>" . $user['amount'] . " Panty's"   . "</h1>";
        echo "<h1>" . "Prijs: " . $user['price'] . "</h1>";
    }



    ?>