我通过结帐会话创建了一个条带订阅对象。这是我在创建会话时指定的内容：
'mode' => 'subscription',
'line_items' => [[
'price' => $planId,
'quantity' => 1,
]],
我的问题是，在我的案例中，由于数量 = 1，我是否总是有以下陈述？
$subscription_obj->items->data['0']->plan->id== $subscription_obj->plan->id
因为我的代码每当我需要计划 Id 时，我有时使用左侧表达式，有时使用右侧表达式。所以我只想确保这些在我的情况下是相同的，并且不会有任何：
$subscription_obj->items->data['1']->plan->id ...
Here's my subscription object for a plan of 12 euros/month:
[id] => sub_J75FZOObndggWX
[object] => subscription
[application_fee_percent] =>
[billing_cycle_anchor] => 1615717329
[billing_thresholds] =>
[cancel_at] => 1620984129
[cancel_at_period_end] =>
[canceled_at] => 1615717335
[collection_method] => charge_automatically
[created] => 1615717329
[current_period_end] => 1618395729
[current_period_start] => 1615717329
[customer] => cus_J75Fs7RnQtMBTX
[days_until_due] =>
[default_payment_method] => pm_1IUr5IHEWYmoXN4GjeSdn3aK
[default_source] =>
[default_tax_rates] => Array
(
)
[discount] =>
[ended_at] =>
[items] => Stripe\Collection Object
(
[object] => list
[data] => Array
(
[0] => Stripe\SubscriptionItem Object
(
[id] => si_J75F5QEL5Gnzqf
[object] => subscription_item
[billing_thresholds] =>
[created] => 1615717329
[metadata] => Stripe\StripeObject Object
(
)
[plan] => Stripe\Plan Object
(
[id] => price_1IJes9HEWYmoXN4GiFeNywqa
[object] => plan
[active] => 1
[aggregate_usage] =>
[amount] => 1200
[amount_decimal] => 1200
[billing_scheme] => per_unit
[created] => 1613048777
[currency] => eur
[interval] => month
[interval_count] => 1
[livemode] =>
[metadata] => Stripe\StripeObject Object
(
)
[nickname] =>
[product] => prod_IvVt5EemrpxKcf
[tiers_mode] =>
[transform_usage] =>
[trial_period_days] =>
[usage_type] => licensed
)
[price] => Stripe\Price Object
(
[id] => price_1IJes9HEWYmoXN4GiFeNywqa
[object] => price
[active] => 1
[billing_scheme] => per_unit
[created] => 1613048777
[currency] => eur
[livemode] =>
[lookup_key] =>
[metadata] => Stripe\StripeObject Object
(
)
[nickname] =>
[product] => prod_IvVt5EemrpxKcf
[recurring] => Stripe\StripeObject Object
(
[aggregate_usage] =>
[interval] => month
[interval_count] => 1
[trial_period_days] =>
[usage_type] => licensed
)
[tiers_mode] =>
[transform_quantity] =>
[type] => recurring
[unit_amount] => 1200
[unit_amount_decimal] => 1200
)
[quantity] => 1
[subscription] => sub_J75FZOObndggWX
[tax_rates] => Array
(
)
)
)
[has_more] =>
[total_count] => 1
[url] => /v1/subscription_items?subscription=sub_J75FZOObndggWX
)
[latest_invoice] => in_1IUr5JHEWYmoXN4GTmJ3pJUZ
[livemode] =>
[metadata] => Stripe\StripeObject Object
(
[myID] => 1
)
[next_pending_invoice_item_invoice] =>
[pause_collection] =>
[pending_invoice_item_interval] =>
[pending_setup_intent] =>
[pending_update] =>
[plan] => Stripe\Plan Object
(
[id] => price_1IJes9HEWYmoXN4GiFeNywqa
[object] => plan
[active] => 1
[aggregate_usage] =>
[amount] => 1200
[amount_decimal] => 1200
[billing_scheme] => per_unit
[created] => 1613048777
[currency] => eur
[interval] => month
[interval_count] => 1
[livemode] =>
[metadata] => Stripe\StripeObject Object
(
)
[nickname] =>
[product] => prod_IvVt5EemrpxKcf
[tiers_mode] =>
[transform_usage] =>
[trial_period_days] =>
[usage_type] => licensed
)
[quantity] => 1
[schedule] =>
[start_date] => 1615717329
[status] => active
[transfer_data] =>
[trial_end] =>
[trial_start] =>
)
```
答案 0 :(得分：1)
是的，你说得对。您还可以添加一个保护子句来检查 data 的大小是否为 1，如果这是您一直期望的那样。 quantity 对您的情况没有帮助，它指的是您的 Plan 订阅的特定 Customer 的数量，并不意味着 data 的大小.