使用貝寶REST API在循環中收費會員

Question

我想每週向我的網站會員收費。我已將他們的信用卡信息及其地址，電話號碼，城市，州等存儲在一張表中。

我正在使用PayPal REST API和PHP。

這裏是我的代碼：

while ($row2 = $res2->fetch_assoc()) 
{     
    // ### Address 
    // Base Address object used as shipping or billing 
    // address in a payment. [Optional] 
    $addr = new Address(); 

    if ($row2 ['billing_address']) 
     $addr->setLine1 ($row2 ['billing_address']); 

    if ($row2 ['billing_address2']) 
     $addr->setLine2 ($row2 ['billing_address2']); 

    if ($row2 ['billing_city']) 
     $addr->setCity ($row2 ['billing_city']); 

    if ($row2 ['billing_state']) 
     $addr->setState ($row2 ['billing_state']); 

    if ($row2 ['billing_zip']) 
     $addr->setPostal_code ($row2 ['billing_zip']); 

    $addr->setCountry_code ("US"); 

    if ($row2 ['billing_phone']) 
     $addr->setPhone ($row2 ['billing_phone']); 

    // Decrypt Credit Cart # 
    $credit_card_number = decrypt ($row2 ['cc_number'], 'hassan'); 
    $cc_name_array = explode (" ", $row2 ['cc_name']); 
    $cc_name_array_count = count ($cc_name_array); 

    $cc_f_name = $cc_name_array [0]; 
    $cc_l_name = ""; 
    for ($i = 1; $i < $cc_name_array_count; $i++) 
    { 
     $cc_l_name .= str_replace (array ("&", "."), "", $cc_name_array [$i]) . " "; 
    } 
    $cc_l_name = trim ($cc_l_name); 

    // ### CreditCard 
    // A resource representing a credit card that can be 
    // used to fund a payment. 
    $card = new CreditCard(); 
    if (strtolower ($row2 ['cc_type']) == "visa") 
    { 
     $card->setType ('visa'); 
    } 
    elseif (strtolower ($row2 ['cc_type']) == "mastercard") 
    { 
     $card->setType ('mastercard'); 
    } 
    elseif (strtolower ($row2 ['cc_type']) == "discover cards") 
    { 
     $card->setType ('discover'); 
    } 
    elseif (strtolower ($row2 ['cc_type']) == "american express") 
    { 
     $card->setType ('amex'); 
    } 
    $card->setNumber ($credit_card_number); 
    $card->setExpire_month ($row2 ['cc_expiry_month']); 
    $card->setExpire_year ($row2 ['cc_expiry_year']); 
    $card->setCvv2 ($row2 ['cc_cvv']); 
    $card->setFirst_name ($cc_f_name); 
    $card->setLast_name ($cc_l_name); 
    $card->setBilling_address ($addr); 

    // ### FundingInstrument 
    // A resource representing a Payer's funding instrument. 
    // Use a Payer ID (A unique identifier of the payer generated 
    // and provided by the facilitator. This is required when 
    // creating or using a tokenized funding instrument) 
    // and the `CreditCardDetails` 
    $fi = new FundingInstrument(); 
    $fi->setCredit_card ($card); 

    // ### Payer 
    // A resource representing a Payer that funds a payment 
    // Use the List of `FundingInstrument` and the Payment Method 
    // as 'credit_card' 
    $payer = new Payer(); 
    $payer->setPayment_method ("credit_card"); 
    $payer->setFunding_instruments (array ($fi)); 

    // ### Amount 
    // Let's you specify a payment amount. 
    $amount = new Amount(); 
    $amount->setCurrency ("USD"); 
    //$amount->setTotal ("1.00"); 
    $amount->setTotal ($row ['billing_cost']); 

    // ### Transaction 
    // A transaction defines the contract of a 
    // payment - what is the payment for and who 
    // is fulfilling it. Transaction is created with 
    // a `Payee` and `Amount` types 
    $transaction = new Transaction(); 
    $transaction->setAmount ($amount); 
    $transaction->setDescription ("Commission deducted for the sold property."); 

    // ### Payment 
    // A Payment Resource; create one using 
    // the above types and intent as 'sale' 
    $payment = new Payment(); 
    $payment->setIntent ("sale"); 
    $payment->setPayer ($payer); 
    $payment->setTransactions (array ($transaction)); 



    // ### Create Payment 
    // Create a payment by posting to the APIService 
    // using a valid ApiContext (See bootstrap.php for more on `ApiContext`) 
    // The return object contains the status; 
    try 
    { 
     $payment->create ($apiContext); 
    } 
    catch (\PPConnectionException $ex) 
    { 
     echo "Exception: " . $ex->getMessage() . PHP_EOL; 
     var_dump ($ex->getData()); 
     exit (1); 
    } 


    if ($payment->getId()) 
    { 
     $br_date = time(); 
     $insert = "INSERT INTO `billing_reports` 
        (`sh_id`, `listing_id`, `billed_person_type`, `billed_person_id`, `cc_type`, `cc_name`, `cc_number`, `cc_expiry_month`, `cc_expiry_year`, `cc_cvv`, `billing_amount`, `payment_id`, `br_date`, `status`) 
        VALUES ('" . $row ['sh_id'] . "', '" . $row ['listing_id'] . "', '" . $row2 ['member_type'] . "', '" . $row2 ['member_id'] . "', '" . $row2 ['cc_type'] . "', '" . $row2 ['cc_name'] . "', '" . $row2 ['cc_number'] . "', '" . $row2 ['cc_expiry_month'] . "', '" . $row2 ['cc_expiry_year'] . "', '" . $row2 ['cc_cvv'] . "', '" . $row ['billing_cost'] . "', '" . $payment->getId() . "', '" . $br_date . "', 1)"; 
     $GLOBALS ['mysqli']->query ($insert) or die ($GLOBALS ['mysqli']->error . __LINE__); 
     //unset ($addr, $card, $fi, $payer, $amount, $transaction, $payment); 
    } 
} 

循環的每次迭代從表中得到一個新成員，填補他的信息轉化爲REST API的變量。

但問題是，這個循環工作正常，如果2個或更多的連續成員有相同的信用卡信息。當信息發生變化時，交易無法通過。

我不是PayPal的專家。因此，需要你們的幫助。我認爲問題在於$付款對象。它沒有用新值實例化。任何形式的幫助都會很棒。我已經花了3天的時間:(

Answer 1

其實問題是在循環中'$ apiContext'對象在後續迭代中丟失了它的值。所以，簡單快速的修復（不確定它是否是正確的修復）是在每次迭代初始化「$ APICONTEXT」。就像這個...

while ($row = $res->fetch_assoc()) 
{ 

    // ### Api Context 
    // Pass in a `PayPal\Rest\ApiContext` object to authenticate 
    // the call. You can also send a unique request id 
    // (that ensures idempotency). The SDK generates 
    // a request id if you do not pass one explicitly. 
    $apiContext = new ApiContext(new OAuthTokenCredential(
      '<client-id>', 
      '<secret>')); 

時，下面的代碼行執行「$ APICONTEXT」對象將有值這樣。

$payment->create ($apiContext); 

最初'$ apiContext'對象在'bootstrap.php'文件中被初始化，而我t是一次初始化。現在理論上這應該適用於所有循環迭代，但它不起作用。要訪問'ApiContext'類，您還需要在頂部包含以下代碼行。

use PayPal\Rest\ApiContext; 
use PayPal\Auth\OAuthTokenCredential;