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The second-hand recycling website developed by PHP realizes real-time updating of product information

王林Original: 2023-07-02 14:24:10986browse

With social development and changes in consumption concepts, the second-hand recycling market has attracted more and more attention. In order to meet users' needs for second-hand goods, many websites have begun to emerge. This article will introduce how to use PHP to develop a second-hand recycling website and implement the function of instantly updating product information.

1. Create database and data table

First, we need to create a database to store the product information uploaded by users. Open the MySQL database and execute the following SQL statement to create a database named "recycle":

CREATE DATABASE recycle;

Then, switch to the "recycle" database and execute the following SQL statement to create a data table named "products" ：

USE recycle;

CREATE TABLE products (
    id INT PRIMARY KEY AUTO_INCREMENT,
    name VARCHAR(100) NOT NULL,
    description TEXT NOT NULL,
    price DECIMAL(10, 2) NOT NULL,
    image VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

2. Design the page structure of the website

Create a file named "index.php" and write HTML code in the file to design the page structure of the website. The following is a simple example:

<!DOCTYPE html>
<html>
<head>
    <title>二手物品回收</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
    <div class="container">
        <h1>二手物品回收</h1>
        <form action="upload.php" method="POST" enctype="multipart/form-data">
            <label for="name">物品名称</label>
            <input type="text" name="name" id="name">
            
            <label for="description">物品描述</label>
            <textarea name="description" id="description"></textarea>
            
            <label for="price">价格</label>
            <input type="text" name="price" id="price">
            
            <label for="image">上传图片</label>
            <input type="file" name="image" id="image">
            
            <input type="submit" value="上传">
        </form>
        
        <h2>最新物品</h2>
        <?php
        // PHP代码将在下面添加
        ?>
    </div>
</body>
</html>

3. Processing uploaded product information

Create a file named "upload.php" and write PHP code in the file to process the uploaded product information. Product information. The following is a simple example:

<?php
// 获取用户上传的商品信息
$name = $_POST['name'];
$description = $_POST['description'];
$price = $_POST['price'];

// 处理上传的图片
$image = $_FILES['image']['name'];
$image_tmp = $_FILES['image']['tmp_name'];
$target_dir = "uploads/";
$target_file = $target_dir . basename($image);
move_uploaded_file($image_tmp, $target_file);

// 将商品信息插入到数据库中
$pdo = new PDO("mysql:host=localhost;dbname=recycle", "root", "");
$sql = "INSERT INTO products (name, description, price, image) VALUES (?, ?, ?, ?)";
$stmt = $pdo->prepare($sql);
$stmt->execute([$name, $description, $price, $target_file]);

// 重定向到首页
header("location: index.php");
exit;
?>

4. Display the latest item information

Return to the "index.php" file and insert the following code at the location marked by the PHP code to display the latest uploaded items Information:

<?php
// 查询最新上传的物品信息
$sql = "SELECT * FROM products ORDER BY created_at DESC LIMIT 10";
$stmt = $pdo->prepare($sql);
$stmt->execute();
$products = $stmt->fetchAll();

// 显示最新物品信息
foreach ($products as $product) {
    echo '<div class="product">';
    echo '<img src="' . $product['image'] . '">';
    echo '<h3>' . $product['name'] . '</h3>';
    echo '<p>' . $product['description'] . '</p>';
    echo '<p class="price">价格：' . $product['price'] . '</p>';
    echo '</div>';
}
?>

5. Improve the style of the website

Create a file named "style.css" and write CSS code in the file to beautify the style of the website. The following is a simple example:

.container {
    max-width: 800px;
    margin: 0 auto;
}

h1, h2, h3 {
    text-align: center;
}

form {
    margin-bottom: 20px;
}

label, input, textarea {
    display: block;
    margin-bottom: 10px;
}

.product {
    display: inline-block;
    width: 200px;
    margin: 10px;
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
}

.product img {
    max-width: 100%;
}

.price {
    font-weight: bold;
}

6. Test website

Now, open the homepage "index.php" of the website, try to upload some product information and check whether the latest items are displayed normally. .

At this point, the second-hand recycling website we developed using PHP is completed. Users can upload information about second-hand products through the website and realize the function of instantly updating product information. I hope this article can help you in PHP development.

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