phpweb产品分类插件

// 示例代码：检查数据库连接
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}
echo "连接成功";

// 示例代码：查询分类数据
$sql = "SELECT id, name FROM categories";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "ID: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();

// 示例代码：处理分类添加
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST['name'];
    $parent_id = $_POST['parent_id'];

    $sql = "INSERT INTO categories (name, parent_id) VALUES ('$name', '$parent_id')";

    if ($conn->query($sql) === TRUE) {
        echo "新分类添加成功";
    } else {
        echo "错误: " . $sql . "<br>" . $conn->error;
    }
}