ChargeBee发票PHP请求，访问$invoices

Question

我通过PHP向ChargeBee的API提出以下请求：

ChargeBee_Environment::configure("chargebee-test","test_uybGuyguyguykynkgYgkfvyt");
$all = ChargeBee_Invoice::all(array(
    "customer_id" => 2uyg23inuy2g3ou,
    "limit"       => 5, 
    "status[is]"  => "paid", 
    "total[lte]"  => 1000,
    "sortBy[asc]" => "date"));

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice);
    echo'</pre>';
}

每次对$entry->invoice()的调用都返回一个具有以下结构的对象：

ChargeBee_Invoice Object
(
    [allowed:protected] => Array
        (
            [0] => id
            [1] => poNumber
            [2] => customerId
            [3] => subscriptionId
        )

    [_values:protected] => Array
        (
            [id] => 4
            [customer_id] => 2uyg23inuy2g3ou
            [subscription_id] => 2uyg23inuy2g3ou
            [line_items] => Array
                (
                    [0] => Array
                        (
                            [id] => li_2uyg23inuy2g3ou
                            [date_from] => 1484106779
                        )

                )

            [sub_total] => 200
            [linked_payments] => Array
                (
                    [0] => Array
                        (
                            [txn_id] => txn_2uyg23inuy2g3ou
                            [applied_amount] => 200
                            [applied_at] => 1484106781
                            [txn_status] => success
                            [txn_date] => 1484106781
                            [txn_amount] => 200
                        )

                )

    [_subTypes:protected] => Array
        (
            [line_items] => ChargeBee_InvoiceLineItem
            [discounts] => ChargeBee_InvoiceDiscount
            [taxes] => ChargeBee_InvoiceTax
        )

)

(我已经减少了上面的数据量，因为返回的请求很难在这里显示)

这就是我陷入困境的地方，我如何能够从对象中提取数据？

我尝试了以下几点：

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice->allowed);
    echo'</pre>';
}

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice->allowed());
    echo'</pre>';
}

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice->ChargeBee_Invoice);
    echo'</pre>';
}

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice->ChargeBee_Invoice());
    echo'</pre>';
}

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice['ChargeBee_Invoice']);
    echo'</pre>';
}

foreach($all as $entry){
    $invoice = $entry->invoice();
    echo'<pre>';
    print_r($invoice['allowed']);
    echo'</pre>';
}

我亦曾尝试使用以下程式码作上述多项修改：

foreach($all as $entry){
    $invoice = $entry->invoice();
    foreach($invoice as $cinvoice) {
        echo'<pre>';
        print_r($cinvoice->allowed);
        echo'</pre>';
    }
}

但我尝试的每一件事都会回来：-

Fatal error:  Uncaught exception 'Exception' with message 'Unknown property

Answer 1

从文档中可以看到发票对象的公共属性。

例如，要访问它们，您只需：

echo "<pre>";
foreach($all as $entry){
    $invoice = $entry->invoice();
    echo "Invoice #{$invoice->customerId}  for a total of {$invoice->amountDue} has status '{$invoice->status}'"\n;
}
echo "</pre>";

测试它，并检查文档中的其他可用属性。

Answer 2

您希望直接访问受保护的属性。访问对象ChargeBee_Invoice中的数据是由魔术方法__get() (模型)实现的。可以查看此页的可用属性列表。此代码将帮助您开始：

<?php
  foreach ($all as $entry)
  {
      /* Get next invoice */
      $invoice = $entry->invoice();

      /* Get properties from invoice */
      echo $invoice->id;
      echo $invoince->subscription_id;

      /* And so on */
  }
?>