生成不重复的随机数

$numbers = range(1,42);
shuffle($numbers);
$result = array_slice($numbers,0,3);
var_dump($result);

$red = range(1,33);
shuffle($red);
$result = array_slice($red,0,6);
sort($result);
echo implode(',',$result);


$lan = rand(1,16);
echo '@'.$lan;