Second-hand recycling website developed using PHP supports logistics cost calculation

The second-hand recycling website developed using PHP supports logistics cost calculation

With the improvement of social environmental awareness, the demand for second-hand recycling websites has gradually increased. In order to better meet the needs of users, we decided to add a logistics cost calculation function to the second-hand recycling website so that users can accurately know the logistics cost during the transaction process. This article will introduce how to use PHP to develop this function, and attach relevant code examples.

The calculation of logistics costs is closely related to the logistics method, and is generally calculated based on the charging standards of the express company. First, we need to get the logistics method selected by the user and the weight of the item. The code example is as follows:

<form action="logistics_cost.php" method="post">
    <label for="logistics">物流方式：</label>
    <select name="logistics" id="logistics">
        <option value="express">快递</option>
        <option value="self_pickup">自提</option>
    </select>
    <br>
    <label for="weight">物品重量（kg）：</label>
    <input type="text" name="weight" id="weight">
    <br>
    <input type="submit" value="计算物流费用">
</form>

After the user selects the logistics method and enters the weight of the item, clicking the submit button will jump to the logistics_cost.php page for cost calculation. In the logistics_cost.php page, we need to first obtain the data submitted by the user and calculate the corresponding costs according to different logistics methods. The code example is as follows:

$logistics = $_POST['logistics'];
$weight = $_POST['weight'];

if ($logistics == 'express') {
    // 根据快递公司的费用标准计算物流费用
    $cost = $weight * 10; // 假设每千克物品运输费用为10元
    echo "物流费用为：" . $cost . "元";
} else if ($logistics == 'self_pickup') {
    // 自提不需要物流费用
    echo "自提免费";
} else {
    echo "请选择物流方式";
}

The above code determines whether to choose express delivery or self-pickup based on the logistics method selected by the user and the weight of the item entered, and then calculates the corresponding cost and outputs the result.

In a real application, we may need to obtain the logistics company's fee standards from the database, which will not be explained in detail here. At the same time, we can also add more logistics methods and related cost calculation rules.

Summary:
Through the above code example, we can easily implement the logistics cost calculation function in the second-hand recycling website. After the user submits the logistics method and item weight, the system can calculate the relevant costs based on the logistics method selected by the user and return the results to the user. In this way, users can accurately know the logistics cost before the transaction, which increases transaction transparency and user experience.

Of course, in actual development, we can further optimize the code, such as adding legality verification for weight input, providing a more friendly user interface, etc. But the basic framework introduced in this article is enough for us to understand how to use PHP to develop the logistics cost calculation function in the second-hand recycling website. I hope this article is helpful to everyone and can be applied in actual projects.

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