Enum Setup

##Basic Enum

The most basic setup to define an enum by using php-doc annotations.

use Spatie\Enum\Enum;

/**
 * @method static self monday()
 * @method static self tuesday()
 * @method static self wednesday()
 * @method static self thursday()
 * @method static self friday()
 * @method static self saturday()
 * @method static self sunday()
 *
 * @method static bool isMonday(int|string $value = null)
 * @method static bool isTuesday(int|string $value = null)
 * @method static bool isWednesday(int|string $value = null)
 * @method static bool isThursday(int|string $value = null)
 * @method static bool isFriday(int|string $value = null)
 * @method static bool isSaturday(int|string $value = null)
 * @method static bool isSunday(int|string $value = null)
 */
final class WeekDayEnum extends Enum
{
}

##Custom value/index Enum

This enum will be used in following chapters.

##by Constants

This is the easiest way to change the value/index by it's enum name. The key of both arrays is the name of the method it's accessed by and the value MUST be a string for the value map and an int for the index map.

use Spatie\Enum\Enum;
/**
 * @method static self monday()
 * @method static self tuesday()
 * @method static self wednesday()
 * @method static self thursday()
 * @method static self friday()
 * @method static self saturday()
 * @method static self sunday()
 *
 * @method static bool isMonday(int|string $value = null)
 * @method static bool isTuesday(int|string $value = null)
 * @method static bool isWednesday(int|string $value = null)
 * @method static bool isThursday(int|string $value = null)
 * @method static bool isFriday(int|string $value = null)
 * @method static bool isSaturday(int|string $value = null)
 * @method static bool isSunday(int|string $value = null)
 */
final class WeekDayEnum extends Enum
{
    const MAP_INDEX = [
        'monday' => 1,
        'tuesday' => 2,
        'wednesday' => 3,
        'thursday' => 4,
        'friday' => 5,
        'saturday' => 6,
        'sunday' => 7,
    ];
     const MAP_VALUE = [
        'monday' => 'Montag',
        'tuesday' => 'Dienstag',
        'wednesday' => 'Mittwoch',
        'thursday' => 'Donnerstag',
        'friday' => 'Freitag',
        'saturday' => 'Samstag',
        'sunday' => 'Sonntag',
    ];
}

##by Methods

This approach offers much more flexibility because you can use the return value of a function for the value/index resolving. Keep in mind that these methods are called once for the enum cache (used to make an enum) but called everytime you access the value/index via the getters.

So if you use, for example, time() for the index you can only make the enum by the timestamp the enum was first cached but you will get the current timestamp if you call getIndex().

use Spatie\Enum\Enum;

/**
 * @method static bool isMonday(int|string $value = null)
 * @method static bool isTuesday(int|string $value = null)
 * @method static bool isWednesday(int|string $value = null)
 * @method static bool isThursday(int|string $value = null)
 * @method static bool isFriday(int|string $value = null)
 * @method static bool isSaturday(int|string $value = null)
 * @method static bool isSunday(int|string $value = null)
 */
abstract class WeekDayEnum extends Enum
{
    public static function monday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 1;
            }

            public function getValue(): string
            {
                return 'Montag';
            }
        };
    }

    public static function tuesday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 2;
            }

            public function getValue(): string
            {
                return 'Dienstag';
            }
        };
    }

    public static function wednesday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 3;
            }

            public function getValue(): string
            {
                return 'Mittwoch';
            }
        };
    }

    public static function thursday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 4;
            }

            public function getValue(): string
            {
                return 'Donnerstag';
            }
        };
    }

    public static function friday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 5;
            }

            public function getValue(): string
            {
                return 'Freitag';
            }
        };
    }

    public static function saturday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 6;
            }

            public function getValue(): string
            {
                return 'Samstag';
            }
        };
    }

    public static function sunday(): WeekDayEnum
    {
        return new class() extends WeekDayEnum {
            public function getIndex(): int
            {
                return 7;
            }

            public function getValue(): string
            {
                return 'Sonntag';
            }
        };
    }
}