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<?php class A { protected $val = 'test'; public function get() { return $this->val; } public function set($val) { return $this->val = $val; } } class B { protected $Obj; public function __construct(A $obj) { $this->Obj = $obj; } public function getObj() { return $this->Obj; } } class C { protected $array; public function __construct($array) { $this->array = $array; } public function getArray($item) { return $this->array[$item]; } } $a = new A(); $arr = array('obj' => $a); $b = new B($a); $c = new C($arr); echo 'Before', PHP_EOL, 'Object : ', $a->get(), PHP_EOL, 'Object in object : ', $b->getObj()->get(), PHP_EOL, 'Object in array : ', $arr['obj']->get(), PHP_EOL, 'Object in array in object : ', $c->getArray('obj')->get(), PHP_EOL; $a->set('modified'); echo 'After', PHP_EOL, 'Object : ', $a->get(), PHP_EOL, 'Object in object : ', $b->getObj()->get(), PHP_EOL, 'Object in array : ', $arr['obj']->get(), PHP_EOL, 'Object in array in object : ', $c->getArray('obj')->get(), PHP_EOL;
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