[php] How to check if $_GET is empty?

if (!$_GET) echo "empty";

why do you need such a checking?

lol
you guys too direct-minded.
don't take as offense but sometimes not-minded at all
$_GET is very special variable, not like others.
it is supposed to be always set. no need to treat it as other variables. when $_GET is not set and it's expected - it is emergency case and that's what "Undefined variable" notice invented for