Psecio\Gatekeeper\DataSource\Mysql::fetch PHP Метод

    public function fetch($sql, $data, $single = false)
    {
        $sth = $this->getDb()->prepare($sql);
        $result = $sth->execute($data);
        if ($result === false) {
            $error = $sth->errorInfo();
            $this->lastError = 'DB ERROR: [' . $sth->errorCode() . '] ' . $error[2];
            return false;
        }
        $results = $sth->fetchAll(\PDO::FETCH_ASSOC);
        return $single === true ? array_shift($results) : $results;
    }