<?php

$dsn = "mysql:host=localhost;dbname=world;charset=utf8mb4";
$options = [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
];

$pdo = new PDO($dsn, 'root', '', $options);

$stmt = $pdo->prepare("SELECT `Code`, `Name` FROM country LIMIT 20");
$stmt->execute();
$countries = $stmt->fetchAll();
foreach ($countries as $country) {
    echo "Code: {$country['Code']}, Name: {$country['Name']}<br>";
}
