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<ReflectionClass::isReadOnlyReflectionClass::isTrait>
^ReflectionClassLast updated: Mon, 26 Oct 2026

ReflectionClass::isSubclassOf

(PHP 5, PHP 7, PHP 8)

ReflectionClass::isSubclassOf — Checks if a subclass

Description

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

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

Parameters

class

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

Return Values

Returns true if the class is a subclass of the specified class or interface, or false otherwise.

See Also


<ReflectionClass::isReadOnlyReflectionClass::isTrait>
^ReflectionClassLast updated: Mon, 26 Oct 2026