PHP Manual: odbc

function odbc_errormsg(?Odbc\Connection $odbc = null): string

Returns a string containing the last ODBC error message, or an empty string if there has been no errors.

If odbc 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).

Version	Description
8.4.0	`odbc` expects an Odbc\Connection instance now; previously, a resource was expected.
8.0.0	`odbc` is now nullable.

odbc_errormsg