##
SWITCH: {
if ($x == 1) { $abc = 1; last SWITCH; };
if ($x == 2) { $def = 1; last SWITCH; };
if ($x == 3) { $xyz = 1; last SWITCH; };
$nothing = 1;
}
####
SWITCH: for ($x) {
if (1) { $abc = 1; last SWITCH; };
if (2) { $def = 1; last SWITCH; };
if (3) { $xyz = 1; last SWITCH; };
$nothing = 1;
}