Changes I needed with PHP 7.1.1

I needed to add this (line 630)

            if (!isset($productsarraycm) || !is_array($productsarraycm)) {
                $productsarraycm = array();
            }

and this (line 686)

                    if (!isset($categoryarraycm) || !is_array($categoryarraycm)) {
                        $categoryarraycm = array();
                    }

So that it would work on PHP 7.1.1.

Cheers,