Doctrine\DBAL\Connection::lastInsertId PHP Method

    public function lastInsertId($seqName = null)
    {
        $this->connect();
        return $this->_conn->lastInsertId($seqName);
    }

 /**
  * @param string $tableName
  * @param array $rows
  */
 protected function insertTableRows($tableName, array $rows)
 {
     foreach ($rows as $rowKey => $values) {
         $this->connection->insert($tableName, $this->parser->parse($values));
         $this->parser->addReference($rowKey, $this->connection->lastInsertId());
     }
 }