php mysql字段数组键名

$result = [
    ['id' => 1, 'name' => 'Alice'],
    ['id' => 2, 'name' => 'Bob']
];

$query = "SELECT `id`, `name` FROM `users`";

$query = "SELECT `id`, `name` FROM `users`";

$query = "SELECT u.id, u.name FROM `users` u JOIN `orders` o ON u.id = o.user_id";

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

// 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 FROM users";
$result = $conn->query($sql);

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