actually when that is active, errors that the object encounters get passed through an exception called 'mysqli_sql_exception' therefore doesnt go through the normal PHP error reporting; resulting in both '@' and 'error_reporting(0)' failing to catch its messages.

Also as an example, the code snippet posted by salathe, when run with mysqli_report(MYSQLI_REPORT_OFF) set, the message generated is:

which is the exception message set in the catch statement however if its set to on (MYSQLI_REPORT_ALL):

so you see, with it ON the 'mysqli_sql_exception' overrides the exception being thrown in the class because it is raised inside the mysqli object itself.

Glad your all sorted though.

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mysql> SELECT * FROM `users` WHERE `users`.`clue` > 0;
Empty set (0.00 sec)