OOP

class Database
{
    // sql host
    private $host = 'localhost';

    // sql gebruikersnaam
    private $username = 'root';

    // sql wachtwoord
    private $password = '';

    // db connectie
    private $conn;

    // sql errors
    private $errors = array();

    public function getQueryList($query)
    {

    }

    public function getQueryRow($query)
    {

    }

    public function getDb()
    {
        // maak verbinding
        $this->conn = new mysqli($this->host, $this->username, $this->password);

        // controleer of verbinding is gelukt
        if ($this->conn->connect_error) {
            $this->setError("Connectie mislukt: " . $this->conn->connect_error);
            return false;
        }

        return true;
    }

    public function updateQuery($query)
    {

    }

    public function insertQuery($query)
    {

    }

    public function setError($error)
    {
        $this->errors[] = $error;
    }

    public function getErrors()
    {
        return $this->errors;
    }
}