# ReflectionClass::getReflectionConstants

(PHP 7 >= 7.1.0, PHP 8)

ReflectionClass::getReflectionConstants — Gets class constants

### Descripción

public ReflectionClass::getReflectionConstants(?int `$filter` = `null`): array

Retrieves reflected constants.

### Parámetros

`filter`

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

### Valores devueltos

An array of ReflectionClassConstant objects.

### Historial de cambios

Versión | Descripción
--- | ---
8.0.0 | `filter` has been added.

### Ejemplos

Ejemplo #1 Basic ReflectionClass::getReflectionConstants() example

`<?php
class Foo {
public const FOO = 1;
protected const BAR = 2;
private const BAZ = 3;
}
$foo = new Foo();
$reflect = new ReflectionClass($foo);
$consts = $reflect->getReflectionConstants();
foreach ($consts as $const) {
print $const->getName() . "\n";
}
var_dump($consts);
?>`

El resultado del ejemplo sería algo similar a:

    FOO
    BAR
    BAZ
    array(3) {
      [0]=>
      object(ReflectionClassConstant)#3 (2) {
        ["name"]=>
        string(3) "FOO"
        ["class"]=>
        string(3) "Foo"
      }
      [1]=>
      object(ReflectionClassConstant)#4 (2) {
        ["name"]=>
        string(3) "BAR"
        ["class"]=>
        string(3) "Foo"
      }
      [2]=>
      object(ReflectionClassConstant)#5 (2) {
        ["name"]=>
        string(3) "BAZ"
        ["class"]=>
        string(3) "Foo"
      }
    }

### Ver también

- ReflectionClass::getReflectionConstant() - Gets a ReflectionClassConstant for a class's constant
- ReflectionClassConstant