<?php class BaseClass { } class MyClass extends BaseClass{ } $object = new MyClass(); echo is_subclass_of('BaseClass', 'BaseClass')? 'Yes<br />':'No<br />'; echo is_subclass_of('MyClass', 'BaseClass')? 'Yes<br />':'No<br />'; echo is_subclass_of('myclass', 'baseclass')? 'Yes<br />':'No<br />'; echo is_subclass_of('myClass', 'baseclass', false)? 'Yes<br />':'No<br />'; echo is_subclass_of($object, 'baseclass', false)? 'Yes<br />':'No<br />'; echo is_subclass_of($object, 'BaseClass')? 'Yes<br />':'No<br />';
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