<?php
require 'config.php';
try {
    $pdo = new PDO("mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4", DB_USER, DB_PASS);
    $stmt = $pdo->query("DESCRIBE users");
    print_r($stmt->fetchAll(PDO::FETCH_ASSOC));
} catch (PDOException $e) {
    echo "Error: " . $e->getMessage();
}