47 lines
1.3 KiB
PHP
47 lines
1.3 KiB
PHP
<?php
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/**
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* Basic enumeration implementation; from http://stackoverflow.com/questions/254514/php-and-enumerations
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*
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* Class Enum
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*/
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abstract class Enum {
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const __default = NULL;
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private static $constCacheArray = NULL;
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private function __construct() {}
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private static function getConstants() {
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if (self::$constCacheArray == NULL) {
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self::$constCacheArray = [];
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}
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$calledClass = get_called_class();
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if (!array_key_exists($calledClass, self::$constCacheArray)) {
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$reflect = new ReflectionClass($calledClass);
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self::$constCacheArray[$calledClass] = $reflect->getConstants();
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}
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return self::$constCacheArray[$calledClass];
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}
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public static function isValidName($name, $strict = false) {
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$constants = self::getConstants();
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if ($strict) {
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return array_key_exists($name, $constants);
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}
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$keys = array_map('strtolower', array_keys($constants));
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return in_array(strtolower($name), $keys);
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}
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public static function isValidValue($value) {
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$values = array_values(self::getConstants());
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return in_array($value, $values, $strict = true);
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}
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public static function getDefault() {
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return static::__default;
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}
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} |