HY，
付款后我的PayPal重定向出现问题。当客户在付款后被重定向到确认页面时，在后台我将数据保存到数据库中，然后我发送一封带有发票的电子邮件给商家和客户。
对于重定向，我使用返回参数，其值如下：http://domain.com/en/shop/shopping-cart/?wpcomethod=cosuccess&type=pp_pro&order_id='' 订单ID是动态值。
但它不起作用。而且我也不能将这个网址放在PayPal帐户首选项中，因为我有这个动态ID。
这是发送给PayPal的表单：
<iframe name="hss_iframe" width="570px" height="550px" style="border:1px solid grey;box-shadow:0px 2px 8px 0.5px;position:relative;left:18%;"></iframe>
<form style="display:none" target="hss_iframe" name="form_iframe" action="https://securepayments.paypal.com/cgi-bin/acquiringweb?cmd=_hosted-payment'" method="post" id="pp-form">
<input type="hidden" value="1" name="upload">
<input type="hidden" name="cmd" value="_hosted-payment">
<input type="hidden" name="redirect_cmd" value="_hosted-payment">
<input type="hidden" value="business email" name="business">
<input type="hidden" value="business email" name="receiver_email">
<input type="hidden" value="templateD" name="template">
<input type="hidden" value="false" name="showHostedThankyouPage">
<input type="hidden" id="lc" value="US" name="lc">
<input type="hidden" id="hLang" value="en" name="lang">
<input type="hidden" value="test" name="item_name_1">
<input type="hidden" value="3341" name="item_number_1">
<input type="hidden" value="1" name="quantity_1">
<input type="hidden" value="1" name="num_cart_items">
<input type="hidden" value="5" name="subtotal">
<input type="hidden" value="1" name="no_note">
<input type="hidden" value="EUR" name="currency_code">
<input type="hidden" value="http://domain.com/en/shop/shopping-cart/?wpcomethod=billing" name="cancel_return">
<input type="hidden" value="http://domain.com/en/shop/shopping-cart/?wpcomethod=cosuccess&type=pp_pro&order_id=1116" name="return">
<input type="hidden" value="CLICK HERE TO COMPLETE YOUR ORDER NOW" name="cbt">
<input type="hidden" value="2" name="rm">
<input type="hidden" value="a%3A4%3A%7Bs%3A8%3A%22order_id%22%3Bs%3A4%3A%221116%22%3Bs%3A6%3A%22buynow%22%3Bs%3A1%3A%22N%22%3Bs%3A4%3A%22user%22%3Bs%3A27%3A%22wpco52ca49f594a4d2.97750046%22%3Bs%3A7%3A%22user_id%22%3Bs%3A1%3A%224%22%3B%7D" name="custom">
<input type="hidden" value="INV1116" name="invoice">
<input type="hidden" value="rtytester@yahoo.com" name="email">
<input type="hidden" value="1565556565" name="night_phone_a">
<input type="hidden" value="Test " name="first_name">
<input type="hidden" value="lesz" name="last_name">
<input type="hidden" value="asdsad 555" name="address1">
<input type="hidden" value="" name="address2">
<input type="hidden" value="asdasd" name="city">
<input type="hidden" value="" name="state">
<input type="hidden" value="454445445" name="zip">
<input type="hidden" value="FR" name="country">
<input type="hidden" value="1" name="ptype">
<input type="hidden" value="1" name="pnr">
<input type="hidden" value="5" name="ptotal">
<input type="hidden" value="0" name="pshipp">
</form>
任何sugestions？