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<?php class Foo { protected $foo; public function getFoo() { return $this->foo(); } } class Bar extends Foo { public function __construct($foo) { $this->foo = $foo; } } $foo = new Foo(new stdClass()); $$bar = new Bar(new stdClass()); var_dump($foo, $bar);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $bar in /in/uOd2t on line 22 Warning: Undefined variable $bar in /in/uOd2t on line 24 object(Foo)#1 (1) { ["foo":protected]=> NULL } NULL

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