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<?php class Model { protected $comments; public function __construct() { $this->comments = new class { public function count() { return rand(1, 20); } }; } } class CommentCount { private $count; public function __construct(int $count) { $this->count = $count; } public function getCount(): int { return $this->count; } } class Post extends Model { public function commentCount(): CommentCount { return new CommentCount($this->comments->count()); } } $post = new Post(); $commentCount = $post->commentCount(); var_dump($commentCount->getCount()); var_dump($commentCount->getCount()); var_dump($commentCount->getCount()); var_dump($commentCount->getCount()); var_dump($commentCount->getCount());

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