host = $_ENV['REMOTE_HOST']; $this->database = $_ENV['REMOTE_DATABASE']; $this->username = $_ENV['REMOTE_USER']; $this->password = $_ENV['REMOTE_PASSWORD']; if (isset($_ENV['REMOTE_PORT'])) { $this->port = $_ENV['REMOTE_PORT']; } } protected string $host; protected string $database; protected int $port; protected string $username; protected string $password; protected PDO $connection; public function connect(): PDO { if (!isset($this->connection)) { $r = 0; $exception = null; while ($r < $this->retries) { try { $dsn = $this->getDsn(); $this->connection = new PDO($dsn, $this->username, $this->password); } catch (PDOException $e) { if ($exception !== null) { $e = new PDOException($e->getMessage(), $e->getCode(), $exception); } $exception = $e; usleep(500); } $r ++; } throw $exception; } return $this->connection; } protected function getDsn(): string { $dsn = "mysql:host={$this->host};dbname={$this->database}"; if (isset($this->port)) { $dsn .= ";port={$this->port}"; } return $dsn; } }