ReflectionClass::getConstant	ReflectionClass::getConstructor

ReflectionClass	Last updated: Mon, 26 Oct 2026

ReflectionClass::getConstants

(PHP 5, PHP 7, PHP 8)

ReflectionClass::getConstants — Gets constants

public function ReflectionClass::getConstants(?int $filter = null): array

Gets all defined constants from a class, regardless of their visibility.

filter: The optional filter, for filtering desired constant visibilities. It's configured using the ReflectionClassConstant constants, and defaults to all constant visibilities.

An array of constants, where the keys hold the name and the values the value of the constants.

Version	Description
8.0.0	`filter` has been added.