(PHP 8 >= 8.1.0)
ReflectionEnum::getBackingType — Gets the backing type of an Enum, if any
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.
Questa funzione non contiene parametri.
An instance of ReflectionNamedType, or null
if the Enum has no backing type.
| Versione | Descrizione |
|---|---|
| 8.2.0 |
The return type is now declared as ?ReflectionNamedType. Previously,
?ReflectionType was declared.
|
Example #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);
?>Il precedente esempio visualizzerà:
string(6) "string"