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<?php class Object { private $data = []; public function &__get($name) { if (!array_key_exists($name, $this->data)) { $this->data[$name] = new Object(); } return $this->data[$name]; } public function __set($name, $value) { $this->data[$name] = $value; } } $o = new Object(); $o->a->b->c->d = 'e'; var_dump($o);

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