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我正在使用 Cashflows 在线支付系统，并尝试根据网页上的表单向他们的服务器提交动态生成的价格。但是，在我需要发送到 Cashflows 终端的 POST 请求中，我需要包含一个带有哈希键的输入字段。我的问题是哈希是基于密钥的，并且该密钥是使用其中一个参数生成的，即价格（见下文），正如集成指南所建议的那样。

如何使用 PHP 将带有以下 POST 参数的表单提交到门户网站？

PHP：

<?php

    $secret_key = 'foobar';
    $store_id = $_POST['store_id'];
    $cart_id = $_POST['cart_id'];
    $amount = $_POST['amount'];
    $currency = $_POST['currency'];
    $test = $_POST['test'];
    $description = $_POST['description'];
    echo $check = hash('sha256', $secret_key . ':' . $store_id . ':' . $cart_id . ':' . $amount . ':' . $currency . ':' . $test . ':' . $description);
    $price = $_POST['price'];
    $qty = $_POST['qty'];
    $carriage_amount = $_POST['carriage_amount'];
    $postage_and_packaging = $_POST['postage_and_packaging'];
    $name = $_POST['name'];
    $address = $_POST['address'];
    $postcode = $_POST['postcode'];
    $country = $_POST['country'];
    $tel = $_POST['tel'];
    $email = $_POST['email'];
    $amount = $_POST['amount'];

?>

具有动态生成价格的表格，其集成示例的修改版本：

<form action="submit.php" method="POST">
    <input type="hidden" name="store_id" value="5939523" />
    <input type="hidden" name="cart_id" value="captubes" />
    <input type="hidden" name="currency" value="GBP" />
    <input type="hidden" name="test" value="1" />
    <input type="hidden" name="description" value="Fruush" />
    <input type="hidden" name="check" value="SOME KEY HERE" />

    <script type="text/javascript" type="text/javascript">

        // The next two functions round numbers to numerical formatting. They do not need to be altered when adding or removing products.
        function roundOff2(value, precision) {
            return places(value,1,precision);
        }

        function places(X, M, N) {
            var T, S=new String(Math.round(X*Number("1e"+N)))
            while (S.length<M+N) S='0'+S
            var y = S.substr(0, T=(S.length-N));
            if(N>0) 
            {
                y += '.' + S.substr(T, N);
            }

            return y;
        }

        // This function checks for empty quantities. It does not need to be altered when adding or removing products.
        function CheckNull2(value) {
            if (value == "") {
                value = "0";
            }

            return value;
        }

        // This function defines the postage and packaging location. It does not need to be altered when adding or removing products.
        function typeOfCarriage(x,whereabouts) {
            x.carriage_amount.value = whereabouts;
        }

        // This function addeds the postage and packaging to the total price of the products. Add new postage rates here, and also edit further down the page to add them to the table.
        function calculate(x) {

            basicprice = calc(x);

            if( Number(basicprice) > 0 ) {

                var postage_and_packaging = 0;

                switch (x.carriage_amount.value) {
                    case "uk" :
                        postage_and_packaging = 1.99;
                        break;
                    case "europe" :
                        postage_and_packaging = 2.99;
                        break;
                    default :
                        postage_and_packaging = 4.99;
                        break;
                }

                x.amount.value = Number(basicprice) + postage_and_packaging;

            } else {

                x.amount.value = "0";

            }

            x.amount.value = roundOff2(x.amount.value,2);

        }

        // The standard price, exluding postage and packaging is calculated here. It does not need to be altered when adding or removing products.
        function calc(x) {

            var b = Number(CheckNull2(x.price.value));
            var c = Number(CheckNull2(x.qty.value));
            var a = (b * c);

            return a;

        }

    </script>

    <p>
        <h3>Number of caps</h3>
        Tube of 6 caps: &pound;4.99 - Quantity: <input name="price" value="4.99" type="hidden" /><input name="qty" size="3" value="1" />
    </p>

    <p>
        <h3>Postage &amp; Packaging:</h3>
        <input name="carriage_amount" value="uk" type="hidden">
        <input checked="checked" name="postage_and_packaging" onClick="typeOfCarriage(this.form,'uk');calculate(this.form)" value="" type="radio" />UK (&pound;1.99)
        <input name="postage_and_packaging" onClick="typeOfCarriage(this.form,'europe');calculate(this.form)" value="" type="radio" />Europe(&pound;2.99)
        <input name="postage_and_packaging" onClick="typeOfCarriage(this.form,'world');calculate(this.form)" value="" type="radio" />Rest of World (&pound;4.99)
    </p>

    <p>
        <h3>Your Details (you will get a chance to change these):</h3>
        <span style="width: 100px; float: left;">Name:</span> <input type="text" name="name" /><br />
        <span style="width: 100px; float: left;">Address:</span> <input type="text" name="address" /><br />
        <span style="width: 100px; float: left;">Postcode:</span> <input type="text" name="postcode" /><br />
        <span style="width: 100px; float: left;">Country:</span> <input type="text" name="country" /><br />
        <span style="width: 100px; float: left;">Telephone:</span> <input type="text" name="tel" /><br />
        <span style="width: 100px; float: left;">Email:</span> <input type="text" name="email" />
    </p>

    <input name="calcButton" onClick="calculate(this.form)" value="Calculate Total" type="button"> Total: &pound; <input type="text" name="amount" value="6.98" />
    <input value="Checkout" onClick="calculate(this.form)" type="submit" />
</form>
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3 回答 3

1

我要做的是将表单发布到服务器上的 PHP 页面，生成哈希，然后将其发布到将接收它的页面。您可以使用 fsockopen() 或 cURL 完成所有这些操作，并且有大量关于如何使用它们的示例。

绝对不要将该变量作为隐藏字段存储在表单上，​​因为它可以被读取、拦截和操作，并在以后给您的电子商务系统带来麻烦。

于 2013-03-15T15:56:20.870 回答
0

您可以发布到您的页面，该页面将生成密钥并向用户发送另一个带有隐藏字段的表单，一旦页面加载，该隐藏字段将自动提交到现金流。这是该表单的示例：

<html>
<head>
<script type="text/javascript">
function submit_form()
{
    document.myform.submit();
}
</script>
</head>
<body onload="submit_form();">
    <form method="POST" name="myform" action="http://www.google.com/">
        <input type="hidden" name="field1" value="value1"/>
        <input type="hidden" name="field2" value="value2"/>
    </form>
</body>
</html>
于 2013-03-15T16:04:25.557 回答
0

最后，答案相对简单——我找不到没有 JavaScript 的解决方案，所以我没有在客户端计算所有内容，而是使用 AJAX 拉入具有正确生成哈希的表单。

于 2013-03-20T21:56:22.790 回答