oci_close() closes the Oracle connection
Starting from the version 1.1 oci_close() correctly
closes the Oracle connection.
option to restore old behaviour of this function.
Returns TRUE on success or FALSE on failure.
In PHP versions before 5.0.0 you must use ocilogoff() instead.
This name still can be used, it was left as alias of
oci_close() for downwards compatability.
This, however, is deprecated and not recommended.