(PHP 8 >= 8.1.0)
UnitEnum::cases — 生成枚举的条目清单
此函数没有参数。
以语法中声明的顺序，返回该枚举中定义的所有条目数组。
示例 #1 基本用法
下例演示了如何返回枚举条目。
<?php
enum Suit
{
case Hearts;
case Diamonds;
case Clubs;
case Spades;
}
var_dump(Suit::cases());
?>以上示例会输出：
array(4) {
[0]=>
enum(Suit::Hearts)
[1]=>
enum(Suit::Diamonds)
[2]=>
enum(Suit::Clubs)
[3]=>
enum(Suit::Spades)
}
If anyone is here wondering how to get all the names from the enum cases and map them into an array, it can be done like this:
array_column(CampaignPeriods::cases(), 'name');
Likewise, have the 2nd argument as 'value' to get the enum's values.
Happy coding, web artisan :)