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<?php class Test{} class AnotherTest{} $instance1 = new Test(); $instance2 = $instance1; $instance3 = & $instance1; var_dump($instance1 instanceof Test); // True var_dump($instance2 instanceof Test); // True var_dump($instance3 instanceof Test); // True $instance3 = new AnotherTest(); var_dump($instance1 instanceof AnotherTest); // True var_dump($instance2 instanceof AnotherTest); // False var_dump($instance3 instanceof AnotherTest); // True

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