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<?php class Animal { public function __call($name, $args) { if (preg_match('/^is([A-Z].+)/', $name, $matches)) { return $matches[1] === get_called_class(); } } } class Cat extends Animal { } class Dog extends Animal { } $brian = new Dog(); var_dump( $brian->isDog() ); var_dump( $brian->isCat() );

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