<?php
try {
    $pdo = new PDO(
        'mysql:host=' . getenv('DB_HOST') . ';port=' . getenv('DB_PORT') . ';dbname=' . getenv('DB_DATABASE'),
        getenv('DB_USERNAME'),
        getenv('DB_PASSWORD'),
        [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
            PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8mb4'
        ]
    );
} catch (PDOException $e) {
    die("Database connection failed: " . $e->getMessage());
}