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PHP mall development skills: Design rating and comment management functions
PHP mall development skills: Design rating and comment management functions
Jul 29, 2023 am 08:52 AM
PHP mall development skills: Design rating and comment management functions
Introduction:
With the rapid development of the Internet, e-commerce has become one of the main ways for people to shop. In order to attract more users, the mall website must provide complete rating and comment management functions so that users can evaluate products and other users can view and refer to these evaluations. This article will introduce how to use the rating and review management functions of PHP Developer City, and attach a working example.
1. Database design:
First, we need to design a database to store information related to product ratings and comments. We can create two tables: one to store product rating information (ratings) and the other to store product review information (comments).
- Form 1 - ratings:
The table will contain the following fields: - id: the unique identifier of the rating
- product_id: the unique identifier of the product , used to associate products and ratings
- user_id: the user's unique identifier, used to associate users and ratings
- rating: rating score (usually an integer between 0-5)
- created_at: Timestamp when the rating was created
- Form 2 - comments:
The form will contain the following fields: - id: The unique identifier of the comment
- product_id: The unique identifier of the product, used to associate products and comments
- user_id: The unique identifier of the user, used to associate users and comments
- comment: Comment content
- created_at: Timestamp of comment creation
2. Front-end development:
Next, we need to display rating and comment information on the front-end page of the mall website, and be able to receive user ratings and Comment.
- Display rating information:
We can use HTML and CSS to design the page layout, and use PHP to get the rating information from the database and display it on the page. Here is a simple sample code:
<div class="rating">
<?php
$productId = $_GET['product_id']; // 通過URL參數(shù)獲取商品ID
// 查詢評分表格中對應(yīng)商品ID的所有評分
$query = "SELECT rating FROM ratings WHERE product_id = $productId";
$result = mysqli_query($connection, $query);
$totalRatings = mysqli_num_rows($result); // 獲取評分總數(shù)
$averageRating = 0;
while ($row = mysqli_fetch_assoc($result)) {
// 計(jì)算所有評分的平均值
$averageRating += $row['rating'];
}
$averageRating = $averageRating / $totalRatings;
?>
<h3>商品評分：<?php echo $averageRating; ?></h3>
<p>評分人數(shù)：<?php echo $totalRatings; ?></p>
</div>- Display review information:
Similarly, we can use HTML and CSS to design the page layout, and use PHP to get the review information from the database , and display it on the page. The following is a simple sample code:
<div class="comments">
<?php
// 查詢評論表格中對應(yīng)商品ID的所有評論
$query = "SELECT comment FROM comments WHERE product_id = $productId";
$result = mysqli_query($connection, $query);
while ($row = mysqli_fetch_assoc($result)) {
// 顯示每條評論
echo "<p>" . $row['comment'] . "</p>";
}
?>
</div> 3. Back-end development:
Next, we need to process the ratings and comments submitted by users.
- Processing ratings:
When a user rates a product, we need to save the rating information to the database. Here is a simple sample code:
$productId = $_POST['product_id']; // 通過表單提交獲取商品ID $userId = $_SESSION['user_id']; // 獲取當(dāng)前用戶的ID $rating = $_POST['rating']; // 獲取用戶提交的評分分?jǐn)?shù) $query = "INSERT INTO ratings (product_id, user_id, rating) VALUES ($productId, $userId, $rating)"; mysqli_query($connection, $query);
- Handling comments:
When a user submits a comment, we need to save the comment information to the database. The following is a simple sample code:
$productId = $_POST['product_id']; // 通過表單提交獲取商品ID $userId = $_SESSION['user_id']; // 獲取當(dāng)前用戶的ID $comment = $_POST['comment']; // 獲取用戶提交的評論內(nèi)容 $query = "INSERT INTO comments (product_id, user_id, comment) VALUES ($productId, $userId, '$comment')"; mysqli_query($connection, $query);
Summary:
Through the above code example, we can implement the rating and comment management functions, and allow users to evaluate products. Of course, this is just a simple example and you can expand and optimize it according to your actual needs. I hope this article will be helpful to the rating and comment management functions in PHP mall development!
The above is the detailed content of PHP mall development skills: Design rating and comment management functions. For more information, please follow other related articles on the PHP Chinese website!
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