(PHP 4 >= 4.0.5, PHP 5)
odbc_error — Get the last error code
Returns a six-digit ODBC state, or an empty string if there has been no errors.
If connection_id is specified, the last state of that connection is returned, else the last state of any connection is returned.
This function returns meaningful value only if last odbc query failed (i.e. odbc_exec() returned FALSE).