ZendDiagnostics\Check\PDOCheck::check PHP Method

    public function check()
    {
        $msg = 'Could not talk to database server';
        try {
            $options = array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_TIMEOUT => $this->timeout);
            $pdo = new PDO($this->dsn, $this->username, $this->password, $options);
            $status = $pdo->getAttribute(PDO::ATTR_CONNECTION_STATUS);
            if (null !== $status) {
                return new Result\Success('Connection to database server was successful.');
            }
        } catch (\PDOException $e) {
            // skip to failure
            $msg .= ', e: ' . $e->getCode();
        }
        return new Result\Failure($msg);
    }