--TEST-- testing reusing anons that implement an interface --FILE-- data = &$data; } public function getArrayAccess() { /* create a child object implementing array access */ /* this grants you access to protected methods and members */ return new class($this->data) implements ArrayAccess { public function offsetGet($offset) { return $this->data[$offset]; } public function offsetSet($offset, $data) { return ($this->data[$offset] = $data); } public function offsetUnset($offset) { unset($this->data[$offset]); } public function offsetExists($offset) { return isset($this->data[$offset]); } }; } } $data = array( rand(1, 100), rand(2, 200) ); $outer = new Outer($data); $proxy = $outer->getArrayAccess(); /* null because no inheritance, so no access to protected member */ var_dump(@$outer->getArrayAccess()[0]); --EXPECT-- NULL