set_error_handler() and @ error control operator

Hi.

I mentioned this before, but I think my question got kind of lost. I'll make
it one short question now.

With set_error_handler('myErrorHandler') I bypass PHP's standard error
handler, including the error control operator @. Can I still make @ work
with my own error handler? Or, how would I avoid getting two warnings in:

if (!($fp = @fopen('not_a_file', 'r')))
trigger_error("Can't open file", E_USER_WARNING);

when using my own error handler?

Thanks,

- John