PHP Enum Demo

BaseEnum.php

<?php

abstract class BaseEnum
{
    public static function toArray()
    {

        $reflection = new \ReflectionClass(static::class);
        $constant = $reflection->getConstants();

        return $constant;
    }

    public static function __callStatic($name, $arguments)
    {
        $arr = static::toArray();

        if(isset($arr[$name])){
            return $arr[$name];
        }

        throw new \BadMethodCallException("找不到對應的列舉值 {$name}");
    }
}

Main.php

<?php

$userModel = new UserModel();

$userModel->selectUser(UserTypeEnum::FACEBOOK());

$userModel->selectUser(UserTypeEnum::GOOGLE());

$userModel->selectUser(UserTypeEnum::LINE());

UserModel.php

<?php

class UserModel
{
    public function selectUser(UserTypeEnum $loginType) {

        //TODO: something ~
    }
}

UserTypeEnum.php

class UserTypeEnum extends BaseEnum
{

    const GOOGLE = 1;
    const FACEBOOK = 2;
    const LINE = 3;
}