Note:
This function does not return number of rows selected!
For SELECT statements this function will return the number of rows, that were
fetched to the buffer with oci_fetch*() functions.
Note:
In PHP versions before 5.0.0 you must use ocirowcount() instead.
This name still can be used, it was left as alias of
oci_num_rows() for downwards compatability.
This, however, is deprecated and not recommended.