PHP：如何从多级数组（Stripe对象）中打印子值

Question

我得到下面的对象，该对象通过检索Stripe会话ID返回（该对象称为$order）。

我能够使用以下命令从第一个对象级别打印值： print_r($order->id);

如何打印第二级的值，例如金额或货币？我尝试了print_r($order->display_items->amount);和print_r($order->display_items['amount']);

PHP：

Stripe\Checkout\Session JSON: { 
    "id": "some_id", 
    "object": "checkout.session", 
    "billing_address_collection": null, 
    "cancel_url": "some_url", 
    "client_reference_id": null, 
    "customer": "some_id", 
    "customer_email": null, 
    "display_items": [{
        "amount": 2990, // this is what I need
        "currency": "eur", // this is what I need
        "custom": {
            "description": null, 
            "images": null, 
            "name": "some_product"
        },
        "quantity": 1, 
        "type": "custom"
    }], 
    "livemode": false, 
    "locale": "en", 
    "mode": "payment", 
    "payment_intent": "some_id", 
    "payment_method_types": [ "card" ], 
    "setup_intent": null, 
    "submit_type": null, 
    "subscription": null, 
    "success_url": "some_url"
}

更新：如果使用print_r($order->display_items);，则会得到以下信息。我可以将其分配给数组，然后从那里打印（如果没有其他解决方案）？

Array ( [0] => Stripe\StripeObject Object ( [amount] => 2990 [currency] => eur [custom] => Stripe\StripeObject Object ( [description] => [images] => [name] => some_product ) [quantity] => 1 [type] => custom ) )

非常感谢。

Answer 1

只要确定您的JSON有效：) https://jsonlint.com/