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<?php class foo { public $bar; public function __destruct() { $r = new ReflectionClass($this->bar); $this->test(); var_dump($r, $this->bar); } public function test() { echo get_class($this->bar); } } $f = new foo; $f->bar = new StdClass; $f->bar->baz = $f; unset($f); //trigger destructor

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