4 public function Gen() {
6 yield
1; yield
2; yield
3;
9 public static function SGen() {
10 var_dump(static::class);
11 yield
4; yield
5; yield
6;
17 foreach ($a->Gen() as $num) { var_dump($num); }
18 foreach (A
::SGen() as $num) { var_dump($num); }