Enumerations are a restricting layer on top of classes and class constants, intended to provide a way to define a closed set of possible values for a type.

Table of Contents ¶. Enumerations overview · Basic enumerations · Backed enumerations · Enumeration methods · Enumeration static methods · Enumeration constants ...

Enumerations overview · Basic enumerations · Backed enumerations · Value listing

This declaration creates a new enumerated type named Suit , which has four and only four legal values: Suit::Hearts , Suit::Diamonds , Suit::Clubs , and Suit:: ...

Enums appear in many languages with a variety of different features. In PHP, Enums are a special kind of object. The Enum itself is a class, and its possible ...

Enums (both Pure Enums and Backed Enums) may contain methods, and may implement interfaces. If an Enum implements an interface, then any type check for that ...

A function can type a parameter against UserStatus and then only accept those four values, period. All four values have a label() method, which returns a human- ...

PHP Manual ¶ · Basic syntax · Types · Variables · Constants · Expressions · Operators · Control Structures · Functions ...

Language Reference · PHP Manual - Manual · Function Reference · Types

A Backed Enum may be backed by types of int or string , and a given enumeration supports only a single type at a time (that is, no union of int|string ). If an ...

Enumeration methods · Типизированные перечисления · BackedEnum

In this updated example, each enum value is represented as an associative array with two keys: 'label' and 'description'. You can customize the label and ...

Although Enums are built on classes and objects, they do not support all object-related functionality. In particular, Enum cases are forbidden from having state ...