60 lines
1.1 KiB
PHP
60 lines
1.1 KiB
PHP
<?php declare(strict_types=1);
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/**
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* Ion
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*
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* Building blocks for web development
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*
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* PHP version 7.1
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*
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* @package Ion
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* @author Timothy J. Warren <tim@timshomepage.net>
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* @copyright 2015 - 2018 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @version 2.2.0
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* @link https://git.timshomepage.net/timw4mail/ion
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*/
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namespace Aviat\Ion;
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use ReflectionClass;
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/**
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* Class emulating an enumeration type
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*
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* @method bool isValid(mixed $key)
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* @method array getConstList()
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*/
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abstract class Enum {
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/**
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* Return the list of constant values for the Enum
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*
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* @return array
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*/
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public static function getConstList(): array
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{
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static $self;
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if (is_null($self))
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{
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$class = \get_called_class();
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$self = new $class;
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}
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$reflect = new ReflectionClass($self);
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return $reflect->getConstants();
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}
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/**
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* Verify that a constant value is valid
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*
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* @param mixed $key
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* @return boolean
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*/
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public static function isValid($key): bool
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{
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$values = array_values(static::getConstList());
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return in_array($key, $values);
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}
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}
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// End of Enum.php
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