Difference between revisions of "PHP/native/BackedEnum"

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</syntaxhighlight>
 
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The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables.
 
The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables.
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==cases()==
 
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This method returns an array containing one element for each case in the enum:
 
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* {{fmt/arg|array index}} (int) => {{fmt/arg|enum case-object}} (BackedEnum)
 
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This list can then be used to build other arrays indexing the enum class's names, values, or calculated values.
 

Revision as of 13:34, 25 August 2024

BackedEnum pseudointerface
manual page: The BackedEnum interface

Note that this (pseudo)interface cannot actually be implemented as a standard class; it can only be (pseudo)implemented by declaring a backed enum.

Definition

interface BackedEnum extends UnitEnum {

   static from(int|string $value): static;
   static tryFrom(int|string $value): ?static;

   string|int $value; // pseudocode

   // INHERITED from UnitEnum (unmodified):

   static cases(): array;
   string $name; // pseudocode
}

The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables.

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