fbsql_change_user --  Change logged in user of the active connection


resource fbsql_change_user (string user, string password, string [database], int [link_identifier])

fbsql_change_user() changes the logged in user of the current active connection, or the connection given by the optional parameter link_identifier. If a database is specified, this will default or current database after the user has been changed. If the new user and password authorization fails, the current connected user stays active.