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enum_exists

(PHP 8 >= 8.1.0)

enum_exists — Checks if the enum has been defined

Опис

enum_exists(string $enum, bool $autoload = true): bool

This function checks whether or not the given enum has been defined.

Параметри

enum

The enum name. The name is matched in a case-insensitive manner.

autoload

Whether to autoload if not already loaded.

Значення, що повертаються

Returns true if enum is a defined enum, false otherwise.

Приклади

Приклад #1 enum_exists() example

<?php
// Check that the enum exists before trying to use it
if (enum_exists(Suit::class)) {
$myclass = Suit::Hearts;
}
?>

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