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ReflectionEnum::isBacked

(PHP 8 >= 8.1.0)

ReflectionEnum::isBacked — Determines if an Enum is a Backed Enum

Descrizione

public ReflectionEnum::isBacked(): bool

A Backed Enum is one that has a native backing scalar equivalent, either a string or an int. Not all Enums are backed.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

true if the Enum has a backing scalar, false if not.

Esempi

Example #1 ReflectionEnum::isBacked() example

<?php
enum Suit
{
    case Hearts;
    case Diamonds;
    case Clubs;
    case Spades;
}

enum BackedSuit: string
{
    case Hearts = 'H';
    case Diamonds = 'D';
    case Clubs = 'C';
    case Spades = 'S';
}

var_dump((new ReflectionEnum(Suit::class))->isBacked());
var_dump((new ReflectionEnum(BackedSuit::class))->isBacked());
?>

Il precedente esempio visualizzerà:

bool(false)
bool(true)

Vedere anche:

Enumerations
ReflectionEnum::getBackingType() - Gets the backing type of an Enum, if any

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