The UnitEnum interface

    (PHP 8 >= 8.1.0)

    Introduction

    The UnitEnum interface is automatically applied to all enumerations by the engine. It may not be implemented by user-defined classes. Enumerations may not override its methods, as default implementations are provided by the engine. It is available only for type checks.

    Interface synopsis

    interface UnitEnum {
    /* Methods */
    public static cases(): array
    }

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