php - Paypal - 传递多个 'Custom' 变量

Question

我将我的网站链接到 Paypal。在我的网站上，我按以下方式将信息传递给 PayPal；

<form target="paypal" action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">

        <input type="hidden" name="cmd" value="_cart">
        <input type="hidden" name="business" value="youremail@email.com">
        <input type="hidden" name="currency_code" value="EUR">
        <input type="hidden" name="upload" value="1">

        <input type="hidden" name="custom" value="<?php echo $randomString ?>"/>
        <input type="hidden" name="return" value="http://www.example.com/thank-you/">
        <input type="hidden" name="rm" value="2"> 

        <?php 
        if (($Adults > 0) && ($Students > 0) && ($Children > 0))
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Adult - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Adults . "'>";

            echo "<input type='hidden' name='item_name_2' value='" . $selectroute ." (Student - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_2' value='15'>";
            echo "<input type='hidden' name='quantity_2' value='" . $Students . "'>";

            echo "<input type='hidden' name='item_name_3' value='" . $selectroute ." (Child - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_3' value='15'>";
            echo "<input type='hidden' name='quantity_3' value='" . $Children . "'>";
        }
        elseif (($Adults > 0) && ($Students > 0))
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Adult - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Adults . "'>";

            echo "<input type='hidden' name='item_name_2' value='" . $selectroute ." (Student - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_2' value='15'>";
            echo "<input type='hidden' name='quantity_2' value='" . $Students . "'>";
        }
        elseif (($Students > 0) && ($Children > 0))
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Student - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Students . "'>";

            echo "<input type='hidden' name='item_name_2' value='" . $selectroute ." (Child - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_2' value='15'>";
            echo "<input type='hidden' name='quantity_2' value='" . $Children . "'>";
        }
        elseif (($Adults > 0) && ($Children > 0))
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Adult - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Adults . "'>";

            echo "<input type='hidden' name='item_name_2' value='" . $selectroute ." (Child - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_2' value='15'>";
            echo "<input type='hidden' name='quantity_2' value='" . $Children . "'>";
        }
        elseif ($Adults > 0)
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Adult - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Adults . "'>";
        }
        elseif ($Students > 0)
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Student - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Students . "'>";
        }
        elseif ($Children > 0)
        {
            echo "<input type='hidden' name='item_name_1' value='" . $selectroute ." (Child - " . $ticket .")'>";
            echo "<input type='hidden' name='amount_1' value='15'>";
            echo "<input type='hidden' name='quantity_1' value='" . $Children . "'>";
        }
        ?>

        <input type="image" src="https://www.paypalobjects.com/webstatic/en_US/btn/btn_paynow_cc_144x47.png" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!" style="position:relative; top: 8em; padding-left:45em;">
        <img alt="" border="0" src="https://www.sandbox.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
    </form>

付款后，用户将被重定向回我网站上的感谢页面。在此页面上，我可以在确认电子邮件中使用通过 PayPal 传递的信息。

        $ItemName1 = $keyarray['item_name1'];
        $ItemName2 = $keyarray['item_name2'];
        $ItemName3 = $keyarray['item_name3'];
        $TotalCost = $keyarray['mc_gross'];
        $Quantity1 = $keyarray['quantity1'];
        $Quantity2 = $keyarray['quantity2'];
        $Quantity3 = $keyarray['quantity3'];
        $ItemCost1 = $keyarray['mc_gross_1'];
        $ItemCost2 = $keyarray['mc_gross_2'];
        $ItemCost3 = $keyarray['mc_gross_3'];
        $Currency = $keyarray['mc_currency'];
        $BookingReference = $keyarray['custom'];
        $FirstName = $keyarray['first_name'];
        $LastName = $keyarray['last_name'];
        $Email = $keyarray['payer_email'];

我已经使用了自定义变量，我相信我只能使用它一次 - 这是否正确？但是我需要再传递 2 个包含出发时间和返回时间的变量 - 如果我不能再次使用自定义变量，我将如何传递这些变量？

Answer 1

用分隔符连接它们:

// PHP
concatenatedString = "value1:value2:value3";

// HTML
<input type="hidden" name="custom" value="<?php echo concatenatedString ?>"/>

然后当它返回时，你可以拆分值并适本地分配它们。