使用openexchangerates.org转换使用欧元货币的任何PayPal付款

Question

我想转发任何使用欧元货币进行的付款交易。我已经修改了我的负责任的PHP文件来做到这一点，但我很难让它使用实时汇率。目前，这是我发送给贝宝和它的作品：

if ($selected != 'EUR') { 
          $themex_final_payable_amount = ((3.672538)*($themex_final_payable_amount))/(66.809999); 
      } 

      $p->add_field('business', trim($busi)); 
      $p->add_field('currency_code','EUR'); 
      $p->add_field('return', $ themex_paypal_success_page); 
      $p->add_field('cancel_return', $cancel_url); 
      $p->add_field('notify_url', get_bloginfo('siteurl').'/?payment_response=paypal_response'); 
      $p->add_field('item_name', $page_title); 
      $p->add_field('custom', $order_id); 
      $p->add_field('amount', ($themex_final_payable_amount)); 
      $p->submit_paypal_post(); // submit the fields to paypal 

我想，而不是3.672538和66.809999使用变量从这个API的答案，这是一个自动每天更新一次。

JSON - latest.json 

{ 
    disclaimer: "https://openexchangerates.org/terms/", 
    license: "https://openexchangerates.org/license/", 
    timestamp: 1449877801, 
    base: "USD", 
    rates: { 
     AED: 3.672538, 
     AFN: 66.809999, 
     ALL: 125.716501, 
     AMD: 484.902502, 
     ANG: 1.788575, 
     AOA: 135.295998, 
     ARS: 9.750101, 
     AUD: 1.390866, 
     /* ... */ 
    } 
} 

的问题是，我无法找到一个方法来称呼他们 - 样使用AED和AFN的今天值...这里是在管理页面中使用的代码的一部分（另一PHP文件）这里我把我的API密钥：

if(isset($_POST['themex_save5'])) 
    { 
    $json = get_option('exchange_rates'); 
    $exchangeRates = json_decode($json); 

    global $themex_currencies_array; 
    foreach ($themex_currencies_array as $themex_currency) { 
     if ($themex_currency != "USD") { 
     $exchangeRates->rates->$ themex_currency = $_POST['themex_' . $themex_currency . '_currency']; 
     } 
    } 

    $json = json_encode($exchangeRates); 
    update_option('exchange_rates', $json); 

    update_option('openexchangerates_appid', trim($_POST['openexchangerates_appid'])); 

    echo '<div class="updated fade"><p>'.__('Settings saved!',' themex').'</p></div>'; 
    } 

基于我认为它应该像这上面，但它不会

if ($selected != 'EUR') { 
       $ themex_final_payable_amount = (($themex_AED_currency)*($ themex_final_payable_amount))/($themex_AFN_currency); 
      } 

Answer 1

因此，这里是我所需要的代码的一部分。我设法让它工作:)

   //-------------------------------------------------------------------------------- 

      if ($selected != 'EUR') { 

      $json = get_option('exchange_rates'); 
      $exchangeRates = json_decode($json); 

      global $themex_currencies_array; 
      foreach ($themex_currencies_array as $themex_currency) { 
       if ($themex_currency != "USD") { 
          switch($themex_currency) { 
          case "AFN": 
            $myAFN = $exchangeRates->rates->$themex_currency; ; 
          break; 
          case "AED": 
            $myAED = $exchangeRates->rates->$themex_currency; ; 
          break; 
          } 
       } 
      } 

      $themex_final_payable_amount = (($myAED)*($themex_final_payable_amount))/($myAFN); 
      } 


     $p->add_field('business', trim($busi)); 
     $p->add_field('currency_code','EUR'); 
     $p->add_field('return', $ themex_paypal_success_page); 
     $p->add_field('cancel_return', $cancel_url); 
     $p->add_field('notify_url', get_bloginfo('siteurl').'/?payment_response=paypal_response'); 
     $p->add_field('item_name', $page_title); 
     $p->add_field('custom', $order_id); 
     $p->add_field('amount', ($themex_final_payable_amount)); 
     $p->submit_paypal_post(); // submit the fields to paypal