1 <?php 2  3 class Registry 4 { 5     private static $arr; 6  7     public static function get($name) 8     { 9         return self::$arr[$name];10     }11 12     public static function set($name, $value)13     {14         self::$arr[$name] = $value;15     }16 17     // typically there would be methods to check if a key has already been registered and so on ...18 }