Enumeration static methods
Enumerations may also have static methods. The use for static methods on the enumeration itself is primarily for alternative constructors. E.g.:
<?php
enum Size
{
case Small;
case Medium;
case Large;
public static function fromLength(int $cm): static
{
return match(true) {
$cm < 50 => static::Small,
$cm < 100 => static::Medium,
default => static::Large,
};
}
}
?>
Static methods may be public, private, or protected, although in practice private and protected are equivalent as inheritance is not allowed.
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