fbsql_set_password — Change the password for a given user
Changes the password for the given user.
If optional and not specified, the function will try to find an open link to the FrontBase server and if no such link is found it will try to create one as if fbsql_connect() was called with no arguments.
The user name.
The new password to be set.
The old password to be replaced.
Returns TRUE on success or FALSE on failure.