1--TEST--
2Ensures null is returned if versions are compared with invalid operator
3--CREDITS--
4David Stockton - <dave@davidstockton.com> - i3logix PHP Testfest 2017
5--FILE--
6<?php
7var_dump(version_compare('1.2', '2.1', '??'));
8?>
9--EXPECT--
10NULL
11
