Online PHP editor | refs for WhVIs

<?php class MyArrayAccess implements \ArrayAccess { public function offsetExists($offset) { } public function offsetSet($offset, $value) { } public function offsetGet($offset) { } public function offsetUnset($offset) { } } function test(array $arr) { echo "test"; } function test2(\ArrayAccess $arr) { echo "test2"; } $arrObj = new MyArrayAccess(); test2($arrObj);