Doctrine\DBAL\Driver\OCI8\OCI8Statement::fetch PHP Method

    public function fetch($fetchMode = null)
    {
        $fetchMode = $fetchMode ?: $this->_defaultFetchMode;
        if (PDO::FETCH_OBJ == $fetchMode) {
            return oci_fetch_object($this->_sth);
        }
        if (!isset(self::$fetchModeMap[$fetchMode])) {
            throw new \InvalidArgumentException("Invalid fetch style: " . $fetchMode);
        }
        return oci_fetch_array($this->_sth, self::$fetchModeMap[$fetchMode] | OCI_RETURN_NULLS | OCI_RETURN_LOBS);
    }