mysql 数据格式化输出

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 查询语句
$sql = "SELECT id, name, age FROM users";
$result = $conn->query($sql);

// 输出HTML表格
if ($result->num_rows > 0) {
    echo "<table><tr><th>ID</th><th>Name</th><th>Age</th></tr>";
    while($row = $result->fetch_assoc()) {
        echo "<tr><td>" . $row["id"]. "</td><td>" . $row["name"]. "</td><td>" . $row["age"]. "</td></tr>";
    }
    echo "</table>";
} else {
    echo "0 结果";
}
$conn->close();
?>

import csv
import pymysql

# 连接数据库
conn = pymysql.connect(host='localhost', user='username', password='password', db='database_name')
cursor = conn.cursor()

# 查询语句
sql = "SELECT id, name, age FROM users"
cursor.execute(sql)

# 导出为CSV文件
with open('users.csv', 'w', newline='', encoding='utf-8') as csvfile:
    writer = csv.writer(csvfile)
    writer.writerow(['ID', 'Name', 'Age'])  # 写入表头
    for row in cursor.fetchall():
        writer.writerow(row)

cursor.close()
conn.close()