> */ private static array $constants = []; /** * The value of the enum * * @var string */ private string $_value; /** * Create a new enum * * @param string $value The value of the enum * * @throws InvalidArgumentException|ReflectionException if enum value is invalid */ public function __construct(string $value) { $components = explode(',', $value); foreach ($components as $component) { if (!self::has($component)) { throw new InvalidArgumentException("Invalid enum value $value"); } } $this->_value = $value; } /** * Check if the enum has the given value * * @param mixed $value * @return bool the enum has the value * @throws ReflectionException */ public static function has($value): bool { if (!is_string($value)) { throw new InvalidArgumentException('The value is expected to be a string type.'); } $array = array_values(self::toArray()); $isList = self::isList($array); if (!$isList) { throw new RuntimeException('Expect all values for the enums to be of the same type.'); } if (count($array) > 0 && !is_string($array[0])) { throw new RuntimeException('Enum values should be strings only.'); } /** @phpstan-ignore-next-line */ return in_array(strtolower($value), array_map(fn ($item) => strtolower($item), self::toArray()), true); } /** * @param array $values * @return bool */ private static function isList(array $values): bool { if (count($values) === 1 || empty($values)) { return true; } $types = []; foreach ($values as $value) { $types[gettype($value)] = true; } if (count(array_keys($types)) > 1) { return false; } return true; } /** * Check if the enum is defined * * @param mixed $value the value of the enum * * @return bool True if the value is defined */ public function is($value): bool { return $this->_value === $value; } /** * Create a new class for the enum in question * * @return array * @throws ReflectionException */ public static function toArray(): array { $class = static::class; if (!(array_key_exists($class, self::$constants))) { $reflectionObj = new \ReflectionClass($class); self::$constants[$class] = $reflectionObj->getConstants(); } return self::$constants[$class]; } /** * Get the value of the enum * * @return string value of the enum */ public function value(): string { return $this->_value; } }