Online PHP editor | refs for 3u1ve

<?php class Loader { private static $instances; public static function get_instance($class) { if(!isset(self::$instances[$class])) { self::$instances[$class] = new $class(); } return self::$instances[$class]; } public static function debug() { print_r(self::$instances); } } class One{ public function __toString() { return 'One'; } } class Two{ public function __toString() { return 'Two'; } } class Foo{ public function __toString() { return 'Foo'; } } $foo = Loader::get_instance('Foo'); $one = Loader::get_instance('One'); $two = Loader::get_instance('Two'); $foo2 = Loader::get_instance('Foo'); $foo3 = Loader::get_instance('Foo'); Loader::debug();