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<?php class x { protected $_data = []; function __set($k, $v) { $this->$k = new y($v); } } class y { protected $name; public function __construct($n) { $this->name = $n; } } $x = new x; $x->a = 'a'; $x->a = 'b'; var_dump($x);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property x::$a is deprecated in /in/MGnoZ on line 9 object(x)#1 (2) { ["_data":protected]=> array(0) { } ["a"]=> string(1) "b" }

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