Snippet which will make Solid Affiliate (v1.0.20) change it's cookie days based on the affiliate

solid-affiliate-snippet-cookies-1.php

add_filter(
    'solid_affiliate/settings/get',
    function ($val, $key) {
        $id_of_affiliate_which_should_have_1_day_cookie = 1;
        if ($key === \SolidAffiliate\Lib\Settings::KEY_COOKIE_EXPIRATION_DAYS) {

            $maybe_affiliate = \SolidAffiliate\Lib\VisitTracking::_affiliate_from_request($_REQUEST);

            if ($maybe_affiliate && ($maybe_affiliate->id === $id_of_affiliate_which_should_have_1_day_cookie)) {
                return 1;
            }
        }
        return $val;
    },
    10,
    2
);