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<?php class A { public $name = 'Dog'; } class B extends A { public $clean = true; } class C extends B { public $happy = true; } function doStuff1(A &$classA) { $classA = new B(); } function doStuff2(B &$classB) { $classB = new C(); } $class = new A(); doStuff1($class); doStuff2($class); var_dump($class);
Output for git.master_jit, git.master
object(C)#1 (3) { ["name"]=> string(3) "Dog" ["clean"]=> bool(true) ["happy"]=> bool(true) }

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