UnitEnum::cases
(PHP 8 >= 8.1.0)
UnitEnum::cases — 生成枚举的条目清单
参数
此函数没有参数。
返回值
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
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) }
+添加备注
用户贡献的备注 1 note
avishkasenanayake at hotmail dot com ¶
2 years ago
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 :)