MySQL 5.6 introduces a new features that must be used with great care. A MySQL users password can be marked as expired. This way, a DBA can force a user to set or reset his password. The MySQL user must set a (new) password before he is allowed to do anything else. As a consequence, if a users password is expired all standard PHP MySQL API connect calls will fail. Applications stop working unless the application is changed to include a user dialog for setting a new password. To develop such a dialog for resetting an expired password one has to use a new connection flag introduced in PHP 5.4.12-dev. Don’t panic: to get in trouble DBA actions have to be at one level with dropping the MySQL user of a production PHP application…

Relax: IF MySQL 5.6 AND IF …AND IF …

You are being warned in time about a pitfall that DBAs may tap into in the …