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ReflectionEnum::getBackingType

(PHP 8 >= 8.1.0)

ReflectionEnum::getBackingType — Gets the backing type of an Enum, if any

Beschreibung

public ReflectionEnum::getBackingType(): ?ReflectionNamedType

If the enumeration is a Backed Enum, this method will return an instance of ReflectionType for the backing type of the Enum. If it is not a Backed Enum, it will return null.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

Rückgabewerte

An instance of ReflectionNamedType, or null if the Enum has no backing type.

Changelog

Version Beschreibung
8.2.0 The return type is now declared as ?ReflectionNamedType. Previously, ?ReflectionType was declared.

Beispiele

Beispiel #1 ReflectionEnum::getBackingType() example

<?php
enum Suit: string
{
case Hearts = 'H';
case Diamonds = 'D';
case Clubs = 'C';
case Spades = 'S';
}

$rEnum = new ReflectionEnum(Suit::class);

$rBackingType = $rEnum->getBackingType();

var_dump((string) $rBackingType);
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

string(6) "string"

Siehe auch