Predefined Interfaces and Classes
PHP Manual

The BackedEnum interface

Introduction

The BackedEnum interface is automatically applied to backed 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

BackedEnum extends UnitEnum
/* Methods */
public static static BackedEnum::from(intstring $value)
public static staticnull BackedEnum::tryFrom(intstring $value)
/* Inherited methods */
public static array UnitEnum::cases()
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