<?php class A { public function gen() { var_dump($this); (yield 1); (yield 2); (yield 3); } public static function sgen() { var_dump(get_called_class()); (yield 4); (yield 5); (yield 6); } } $a = new A(); foreach ($a->gen() as $num) { var_dump($num); } foreach (A::sgen() as $num) { var_dump($num); }
$class = get_called_class(); (yield $class); } public function foo() { return self::gen(); } } class B extends A { } function t($x) { foreach ($x as $v) { var_dump($v); } } t(B::sgen()); t(B::sfoo()); t(A::sgen()); t(A::sfoo()); t(B::gen()); t(B::foo()); t(A::gen()); t(A::foo()); $b = new B(); t($b->gen()); t($b->foo()); $a = new A(); t($a->gen()); t($a->foo());