registry.class.php

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<?php
final class registry {

        private static $vars = array();

        private function __construct() {}

        public static function get($name) {
                if (self::check($name))
                        return self::$vars[$name];
                return null;
        }

        public static function set($name, $val) {
                if (array_key_exists($name, self::$vars))
                        throw new nException('Registry: property '.$name.' already exists.');

                self::$vars[$name] = $val;
                return true;
        }

        public static function setInArray($name, $val, $unique=true) {
                if (!array_key_exists($name, self::$vars))
                        self::$vars[$name] = array();

                if (!$unique || !array_key_exists($val, self::$vars[$name]))
                        self::$vars[$name][] = $val;
                return true;
        }

        public static function check($name) {
                return array_key_exists($name, self::$vars);
        }

}