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<?php
// ============================================================
// PDO wrapper — jediné připojení k databázi pro celou aplikaci
// ============================================================
require_once __DIR__ . '/config.php';
function db(): PDO
{
static $pdo = null;
if ($pdo === null) {
$dsn = 'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';charset=utf8mb4';
$pdo = new PDO($dsn, DB_USER, DB_PASS, [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
PDO::ATTR_EMULATE_PREPARES => false,
]);
}
return $pdo;
}