OCI8Statement' fetchAll method can not do with PDO::FETCH_BOTH

/**

• {@inheritdoc}

  */

private static $fetchStyleMap = array(
PDO::FETCH_BOTH => OCI_BOTH,
PDO::FETCH_ASSOC => OCI_ASSOC,
PDO::FETCH_NUM => OCI_NUM
);

public function fetchAll($fetchStyle = PDO::FETCH_BOTH)
{
if ( ! isset(self::$fetchStyleMap[$fetchStyle]))

$result = array();
oci_fetch_all($this->_sth, $result, 0, -1,
self::$fetchStyleMap[$fetchStyle] | OCI_RETURN_NULLS | OCI_FETCHSTATEMENT_BY_ROW | OCI_RETURN_LOBS);

return $result;
}

oci_fetch_all method　can only surport

• OCI_NUM
• OCI_ASSOC

in $fetchStyleMap, OCI_BOTH is included!!!!