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class_exists	get_called_class

Classes/Object Functions	Last updated: Mon, 26 Oct 2026

enum_exists

(PHP 8 >= 8.1.0)

enum_exists — Checks if the enum has been defined

Description

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

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

Parameters

enum: The enum name. The name is matched in a case-insensitive manner.
autoload: Whether to autoload if not already loaded.

Return Values

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

Examples

Example #1 enum_exists() example

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

See Also

function_exists() - Return true if the given function has been defined
class_exists() - Checks if the class has been defined
interface_exists() - Checks if the interface has been defined
get_declared_classes() - Returns an array with the name of the defined classes

class_exists	get_called_class

Classes/Object Functions	Last updated: Mon, 26 Oct 2026