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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(); } } public function isFat() { return false; } } class Cat extends Animal { } class Dog extends Animal { } $brian = new Dog(); printf("Brian %s a dog.\n", $brian->isDog() ? "is" : "is not"); printf("Brian %s a cat.\n", $brian->isCat() ? "is" : "is not"); var_dump( $brian->isFat() );
Output for git.master, git.master_jit, rfc.property-hooks
Brian is a dog. Brian is not a cat. bool(false)

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