ReflectionClass::isSubclassOf

    (PHP 5, PHP 7, PHP 8)

    ReflectionClass::isSubclassOf — Checks if a subclass

    Опис

    public ReflectionClass::isSubclassOf(ReflectionClass|string $class): bool

    Checks if the class is a subclass of a specified class or implements a specified interface.

    Параметри

    class

    Either the name of the class as string or a ReflectionClass object of the class to check against.

    Значення, що повертаються

    Повертає true у разі успіху або false в разі помилки.

    Прогляньте також

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    User Contributed Notes 2 notes

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    2
    dhairya lakhera
    9 years ago
    class A {}class B {}class C extends B {}$obj=new ReflectionClass('C');var_dump($obj->isSubclassOf ('A')); //boolean falsevar_dump($obj->isSubclassOf ('B')); //boolean true
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    1
    voitcus at gmail dot com
    5 years ago
    Note, that this method is a bit different than the `instanceof` operator, which returns true, when it is a subclass or the very same class (interface). Here, only being a subclass results in true, eg.class A {}class B extends A {}$a = new ReflectionClass('A');$AA = new A;$b = new ReflectionClass('B');$BB = new B;var_dump($a->isSubclassOf($b)); // falsevar_dump($AA instanceof $BB); // falsevar_dump($b->isSubclassOf($a)); // truevar_dump($BB instanceof $AA); // truevar_dump($a->isSubclassOf($a)); // falsevar_dump($AA instanceof $AA); // true
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