2; $b = 3>4; var_dump($a&&$b);//Êä³ö£ºbool(false) echo "
"; var_dump($a||$b);//Êä³ö£ºbool(true) echo "
"; var_dump(!$a);//Êä³ö£ºbool(false) echo "
"; var_dump($a xor $b);//Êä³ö£ºbool(true) echo "
"; ?>