x
<html><body>class MyClass {}class AnotherClass extends MyClass{}$obj = new AnotherClass();if($obj instanceof AnotherClass) { echo "The object is AnotherClass";}// The object is also an instance of the class it is derived fromif($obj instanceof MyClass) { echo "The object is MyClass<br>";}</body></html>
The object is AnotherClassThe object is MyClass