Php 有没有办法将元数据从订阅API传递到收费API？

我有两个功能，即收费和订阅，当成功收费 如果我在那里插入了一些元数据，请参见以下内容：

订阅功能也一样：

然后我有一个单独的文件，我不会在这里发布，因为它只调用费用列表API来获取所有成功的费用，以检查其中的所有元数据，但是我注意到，一旦我通过API创建了订阅，它就只在那里可用元数据1和元数据2

当我查看订阅创建的费用时，元数据中没有附加任何内容。如何将订阅中的元数据附加到与之对应的费用

我只想知道，当有人从订阅事件中订阅费用时，是否附加了元数据1和元数据2

<?php
  require_once('stripe-php-master/init.php');
  require 'apiKeys.php';

$data = $_REQUEST['data'];

if(isset($data['stripeToken'])){
    create_customer($data);
}else{
    printResponse($data,"No Token");
}

//Create Customer
function create_customer($data){

    try{
        \Stripe\Stripe::setApiKey(SK_TEST_KEY);
        $customer = \Stripe\Customer::create(array(
            "description" => 'Widget Create Customer',
            "source" => $data['stripeToken'],
            "email" => $data['stripeEmail']
        ));

        $data['customerID'] = $customer->id;
        //create_charge($data);
        create_subscription($data);

    }catch(Exception $e){
        echo $e->getMessage();
        exit;
    }

}//create_customer

//Create charge
function create_charge($data){

    try{
        \Stripe\Stripe::setApiKey(SK_TEST_KEY);

        $settings = [
            'currency' => 'aud',
            'amount'=>5500,
            'description' => 'Widget Payment for ' .$data['widget_name'],
            'customer' => $data['customerID'],
            'metadata'=>["metadata1" => $data['metadata1'],"metadata2" => $data['metadata2']]
        ];

        // Get the payment token ID submitted by the form:
        $charge = \Stripe\Charge::create($settings);

        printResponse($data, $charge->status);

    }catch(Exception $e){
        printResponse($data,$e->getMessage());
        exit;
    }
}//create_charge

//Create subscription
function create_subscription($data){

    try{

        \Stripe\Stripe::setApiKey(SK_TEST_KEY);

        $settings = [
            'customer' => $data['customerID'],
            'metadata'=>["metadata1" => $data['metadata1'],"metadata2" => $data['metadata2']],
            'items' => [
                [
                  'plan' => $data['widget_class']
                ]
            ]

        ];

        $subscription = \Stripe\Subscription::create($settings);   
        printResponse($data,$subscription->status);

    }catch(Exception $e){
        printResponse($data,$e->getMessage());
        exit;
    }
}

function printResponse($data,$status){
     //CREATE Response JSON
    print_r(json_encode([
        'customer_name'=> $data['customer_name'],
        'metadata1' => $data['metadata1'],
        'metadata2'=> $data['metadata2'],
        'payment_status'=>$status
    ]));

}
?>