MySQL & PHP -从数据库表中获取国家/地区降序计数列表的最佳方式

$servername = "数据库服务器地址";
$username = "用户名";
$password = "密码";
$dbname = "数据库名";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

$sql = "SELECT country, COUNT(*) as count FROM countries GROUP BY country ORDER BY count DESC";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "国家/地区: " . $row["country"]. " - 计数: " . $row["count"]. "<br>";
    }
} else {
    echo "没有结果";
}

$conn->close();