贝宝setExpressCheckout NVP错误

Question

我有一些代码以建立Paypal进行请求的URL，但在某些项目它返回下列错误（响应被转换成一个阵列中后）：

Array 
(
    [TIMESTAMP] => 2012-08-15T14:23:10Z 
    [CORRELATIONID] => XXXXXXXXXXXXXXXXX 
    [ACK] => Failure 
    [VERSION] => 87.0 
    [BUILD] => 3435050 
    [L_ERRORCODE0] => 10413 
    [L_SHORTMESSAGE0] => Transaction refused because of an invalid argument. See additional error messages for details. 
    [L_LONGMESSAGE0] => The totals of the cart item amounts do not match order amounts. 
    [L_SEVERITYCODE0] => Error 
) 

这里是我通过cURL发送的网址：

https://api.sandbox.paypal.com/nvp? 
METHOD=setExpressCheckout 
&VERSION=87.0 
&USER=test_user.mysite.co.uk 
&PWD=1340704478&SIGNATURE=AxhCd62FkHm-KuS.WvqjUnQ.l8WyAuePJQjoYT0C5lGiwjpcVIJHURjI 
&RETURNURL=http://www.mysite.co.uk/checkout/order/confirm 
&CANCELURL=http://www.mysite.co.uk/checkout/order/error 
&L_PAYMENTREQUEST_0_NAME0=Likit+Snaks+&L_PAYMENTREQUEST_0_NUMBER0=LIKIT-SNAKS 
&L_PAYMENTREQUEST_0_DESC0=Flavour%3A+Apple+&+Cinnamon 
&L_PAYMENTREQUEST_0_AMT0=2.08 
&L_PAYMENTREQUEST_0_QTY0=1 
&PAYMENTREQUEST_0_CURRENCYCODE=GBP 
&PAYMENTREQUEST_0_ITEMAMT=2.08 
&PAYMENTREQUEST_0_SHIPPINGAMT=3.65 
&PAYMENTREQUEST_0_TAXAMT=0.52 
&PAYMENTREQUEST_0_AMT=6.25 

但是总和不会加起来吗？

如果有帮助，这里是它建立链接的PHP：

private function buildRequestItemsURL() 
{ 

    $this->db->select("bi_id, prod_id, bi_psc_id, prod_title, prod_sku, bi_price, bi_qty, basket_delivery"); 
    $query = $this->db->get_where("basket_views", array("basket_session" => session_id())); 

    $i = 0; 
    $total = 0; 
    $url = ""; 

    foreach($query->result() as $row) 
    { 

     $row->options = ""; 

     if($i==0) 
     { 

      if(number_format($row->basket_delivery, 2) == 0.00) 
      { 

       header("location: http://www.mysite.co.uk/checkout/basket"); 

      } 
      else 
      { 

       $delivery = $row->basket_delivery; 

      } 

     } 

     $this->db->select("opt_1_name AS Colour, opt_2_name AS Size, opt_3_name AS Flavour, opt_4_name AS Material, opt_5_name AS Style"); 
     $this->db->where("psc_id", $row->bi_psc_id); 
     $query = $this->db->get("product_stock_view bio", 1); 

     foreach($query->first_row() as $key => $value) 
     { 


       $row->options .= (!is_null($value)) ? "{$key}: {$value}, " : "";     

     } 
     $row->bi_price = number_format($row->bi_price * 0.8, 2); 
     $row->options = substr($row->options, 0, -2); 
     $url .= "&L_PAYMENTREQUEST_0_NAME{$i}={$row->prod_title}&L_PAYMENTREQUEST_0_NUMBER{$i}={$row->prod_sku}&L_PAYMENTREQUEST_0_DESC{$i}={$row->options}&L_PAYMENTREQUEST_0_AMT{$i}={$row->bi_price}&L_PAYMENTREQUEST_0_QTY{$i}={$row->bi_qty}"; 

     $total += (($row->bi_price)*$row->bi_qty); 
     ++$i; 

    } 

    $itemTotal = $total; 
    $total += $delivery; 
    $total += ($itemTotal * 0.25); 

    $total = number_format($total, 2); 
    $itemTotal = number_format($itemTotal, 2); 
    $vat = $total - $itemTotal - $delivery; 
    $vat = number_format($vat, 2); 

    $url .= "&PAYMENTREQUEST_0_CURRENCYCODE=GBP&PAYMENTREQUEST_0_ITEMAMT={$itemTotal}&PAYMENTREQUEST_0_SHIPPINGAMT={$delivery}&PAYMENTREQUEST_0_TAXAMT={$vat}&PAYMENTREQUEST_0_AMT=".$total; 

    $url = urlencode($url); 
    $url = str_replace("%3F", "?", $url); 
    $url = str_replace("%26", "&", $url); 
    $url = str_replace("%3D", "=", $url); 

    return $url; 

} 

$url = "?METHOD=setExpressCheckout&VERSION=87.0&USER=user.mysite.co.uk&PWD=1340704478&SIGNATURE=AxhCd62FkHm-KuS.WvqjUnQ.l8WyAuePJQjoYT0C5lGiwjpcVIJHURjI&RETURNURL=http://www.mysite.co.uk/checkout/order/confirm&CANCELURL=http://www.mysite.co.uk/checkout/order/error";  
$url .= $this->buildRequestItemsURL(); 
$url = "https://api.sandbox.paypal.com/nvp".$url; 

Answer 1

的问题是在产品说明中的&。我更改了代码，以便它将url产品属性单独编码到$ url字符串中，从而删除了&。以下是新的buildRequestItemsURL功能代码：

private function buildRequestItemsURL() 
{ 

    $this->db->select("bi_id, prod_id, bi_psc_id, prod_title, prod_sku, bi_price, bi_qty, basket_delivery"); 
    $query = $this->db->get_where("basket_views", array("basket_session" => session_id())); 

    foreach($query->result() as $row) 
    { 

     $row->prod_title = urlencode($row->prod_title); 
     $row->prod_sku = urlencode($row->prod_sku); 

    } 

    $i = 0; 
    $total = 0; 
    $url = ""; 

    foreach($query->result() as $row) 
    { 

     $row->options = ""; 

     if($i==0) 
     { 

      if(number_format($row->basket_delivery, 2) == 0.00) 
      { 

       header("location: http://www.crowstonstack.co.uk/checkout/basket"); 

      } 
      else 
      { 

       $delivery = $row->basket_delivery; 

      } 

     } 

     $this->db->select("opt_1_name AS Colour, opt_2_name AS Size, opt_3_name AS Flavour, opt_4_name AS Material, opt_5_name AS Style"); 
     $this->db->where("psc_id", $row->bi_psc_id); 
     $query = $this->db->get("product_stock_view bio", 1); 

     foreach($query->first_row() as $key => $value) 
     { 

       $row->options .= (!is_null($value)) ? urlencode("{$key}: {$value}, ") : "";    

     } 
     $row->bi_price = number_format($row->bi_price * 0.8, 2); 
     $row->options = substr($row->options, 0, -2); 
     $row->prod_title = str_replace("&", "%26", $row->prod_title); 
     $url .= "&L_PAYMENTREQUEST_0_NAME{$i}={$row->prod_title}&L_PAYMENTREQUEST_0_NUMBER{$i}={$row->prod_sku}&L_PAYMENTREQUEST_0_DESC{$i}={$row->options}&L_PAYMENTREQUEST_0_AMT{$i}={$row->bi_price}&L_PAYMENTREQUEST_0_QTY{$i}={$row->bi_qty}"; 

     $total += (($row->bi_price)*$row->bi_qty); 
     ++$i; 

    } 

    $itemTotal = $total; 
    $total += $delivery; 
    $total += ($itemTotal * 0.25); 

    $total = number_format($total, 2); 
    $itemTotal = number_format($itemTotal, 2); 
    $vat = $total - $itemTotal - $delivery; 
    $vat = number_format($vat, 2); 

    $url .= "&PAYMENTREQUEST_0_CURRENCYCODE=GBP&PAYMENTREQUEST_0_ITEMAMT={$itemTotal}&PAYMENTREQUEST_0_SHIPPINGAMT={$delivery}&PAYMENTREQUEST_0_TAXAMT={$vat}&PAYMENTREQUEST_0_AMT=".$total; 

    return $url; 

}