This is a native PHP implementation to add enumeration support to PHP >= 7.1. It's an abstract class that needs to be extended to use it.
/**
* Class StatusEnum
*
* @method static $this active()
* @method static $this inactive()
* @method string label()
*/
class StatusEnum extends Enum
{
public const ACTIVE = ['value' => 1, 'label' => 'active'];
public const INACTIVE = ['value' => 0, 'label' => 'inactive'];
}
// ways to instantiate an enumerator
$status = StatusEnum::get(StatusEnum::ACTIVE['value']); // by value or instance
$status = StatusEnum::active(); // by name as callable
$status = StatusEnum::byValue('1'); // by value
$status = StatusEnum::byName('ACTIVE'); // by name
// basic methods of an instantiated enumerator
$status->getValue(); // 1
$status->getName(); // ACTIVE
// basic methods to list defined enumerators
StatusEnum::enumerators(); // returns a list of enumerator instances
StatusEnum::values(); // returns a list of enumerator values['value']
StatusEnum::names(); // returns a list of enumerator names
StatusEnum::constants(); // returns an associative array of enumerator names to enumerator values
// same enumerators (of the same enumeration class) holds the same instance
StatusEnum::get(StatusEnum::ACTIVE['value']) === StatusEnum::ACTIVE()
StatusEnum::get(StatusEnum::ACTIVE['value']) != StatusEnum::INACTIVE()
// simplified way to compare two enumerators
$status = StatusEnum::active();
$status->is(StatusEnum::ACTIVE['value']); // true
$status->is(StatusEnum::active()); // true
$status->is(StatusEnum::INACTIVE['value']); // false
$status->is(StatusEnum::inactive()); // false