从mysql数据中获取php格式的小计、合计、合计报表

<?php
// 连接到MySQL数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = mysqli_connect($servername, $username, $password, $dbname);

// 检查连接是否成功
if (!$conn) {
    die("连接失败: " . mysqli_connect_error());
}

// 执行SQL查询
$sql = "SELECT category, SUM(quantity) AS total_quantity, SUM(price) AS total_price FROM products GROUP BY category";
$result = mysqli_query($conn, $sql);

// 将结果格式化为PHP格式
$data = array();
while ($row = mysqli_fetch_assoc($result)) {
    $data[] = $row;
}

// 生成合计报表
foreach ($data as $row) {
    echo "分类: " . $row['category'] . "<br>";
    echo "小计数量: " . $row['total_quantity'] . "<br>";
    echo "小计价格: " . $row['total_price'] . "<br>";
    echo "<br>";
}

// 关闭数据库连接
mysqli_close($conn);
?>