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When I user the instanceof keyword for the Singleton class in Ch07 page 218, it is returning true. See below. // Create a second object to confirm: $TEST = Config::getInstance(); // see what instanceof thinks... if ($TEST instanceof Config) { echo '<pre>$TEST IS instance of Config</p>'; } else { echo '<pre>$TEST IS NOT instance of Config</p>'; } It is echoing that $TEST IS instance of Config. Am I doing something wrong?