Design points of product display and comment functions in PHP flash sale system

Key points in the design of product display and comment functions in the PHP flash sale system

With the development of e-commerce, flash sale activities are becoming more and more popular among users. In order to improve user experience and system performance, it is important to properly design product display and comment functions. This article will take the PHP flash sale system as an example to introduce the design points of product display and comment functions, and provide specific code examples.

1. Product display function design key points

1. Product list display: According to the characteristics of flash sale activities, flash sale products are displayed separately on the homepage or special page. Information such as product pictures, names, original prices, flash sale prices, and remaining inventory can be displayed. Functions such as sorting, filtering, paging, etc. can be added as needed.
2. Single product details display: Click on a product in the product list to jump to the product details page. The details page includes more product information, such as detailed description, specifications, after-sales policies, etc. At the same time, in order to improve the convenience of users' purchase participation, you can add buy now or add to shopping cart buttons to the details page.
3. Countdown display: The flash sale activity has a time limit and requires a countdown to display the start and end time of the activity. Implementing the countdown function through front-end JavaScript code can increase users' sense of urgency in participating in the event.
4. Inventory display: For flash sale products, the remaining inventory needs to be displayed in real time. Users can decide whether to participate in flash sales based on inventory status, so inventory information needs to be updated in real time on the product display page.

2. Key points in the design of the comment function

1. User comments: In order to provide real evaluations of the product for reference by other users, a user comment function can be added to each product. Users can evaluate on the product details page and provide ratings, text comments, pictures and other forms. At the same time, you can like or reply to user comments.
2. Comment sorting and paging: Sort comments according to indicators such as time and number of likes, and display popular comments at the top to increase user reading experience. At the same time, in order to improve the page loading speed, the comment data can be displayed in pages.
3. Comment review and filtering: In order to avoid the appearance of malicious comments, advertisements and other bad information, a review review and filtering mechanism can be designed. The backend management system reviews the content of comments and filters sensitive words to ensure user browsing security.

The following is a specific code example for product display and comment functions.

(1) Product display page code example:

<?php
// 首页商品列表展示
$products = getProductList(); // 获取商品列表数据，可以从数据库中查询

foreach ($products as $product) {
    echo '<div class="product-item">';
    echo '<img  src="' . $product['image'] . '" alt="Design points of product display and comment functions in PHP flash sale system" >';
    echo '<h2>' . $product['name'] . '</h2>';
    echo '<p>原价：' . $product['price'] . '</p>';
    echo '<p>秒杀价：' . $product['seckill_price'] . '</p>';
    echo '<p>剩余库存：' . $product['stock'] . '</p>';
    echo '</div>';
}
?>

(2) Product details page code example:

<?php
// 商品详情展示
$productId = $_GET['productId']; // 通过URL参数获取商品ID
$product = getProductDetail($productId); // 获取商品详情数据，可以从数据库中查询

echo '<div class="product-detail">';
echo '<img  src="' . $product['image'] . '" alt="Design points of product display and comment functions in PHP flash sale system" >';
echo '<h2>' . $product['name'] . '</h2>';
echo '<p>原价：' . $product['price'] . '</p>';
echo '<p>秒杀价：' . $product['seckill_price'] . '</p>';
echo '<p>剩余库存：' . $product['stock'] . '</p>';
echo '<button class="buy-btn">立即购买</button>';
echo '<button class="add-cart-btn">加入购物车</button>';
echo '</div>';
?>

(3) Comment display and submission code example:

<?php
// 商品评论展示
$productId = $_GET['productId']; // 通过URL参数获取商品ID
$comments = getProductComments($productId); // 获取该商品的评论数据，可以从数据库中查询

echo '<div class="comment-list">';
foreach ($comments as $comment) {
    echo '<div class="comment-item">';
    echo '<p>' . $comment['content'] . '</p>';
    echo '<p>评分：' . $comment['score'] . '</p>';
    echo '</div>';
}
echo '</div>';

// 商品评论提交
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $content = $_POST['content'];
    $score = $_POST['score'];
    $userId = getCurrentUserId(); // 获取当前用户ID

    saveProductComment($productId, $content, $score, $userId); // 将评论数据存入数据库
}
?>

<form method="POST" action="">
    <textarea name="content" rows="4" cols="40"></textarea>
    <select name="score">
        <option value="1">1分</option>
        <option value="2">2分</option>
        <option value="3">3分</option>
        <option value="4">4分</option>
        <option value="5">5分</option>
    </select>
    <button type="submit">提交评论</button>
</form>

The above are the design points and specific code examples for the product display and comment functions in the PHP flash sale system. In actual projects, detailed design and optimization are also required based on system requirements and business logic.

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