destoon-全站通用优惠券不能在订单这块显示

module\mall\global.func.php

function get_coupons($username, $seller) {
    $lists = array();
    $result = DB::query("SELECt * FROM ".DT_PRE."finance_coupon WHERe username='$username' AND seller='$seller' AND fromtime<".DT_TIME." AND totime>".DT_TIME." AND oid=0 ORDER BY price ASC LIMIT 10", 'CACHE');
    while($r = DB::fetch_array($result)) {
        $lists[] = $r;
    }
    return $lists;
}

AND seller='$seller' 改成 AND (seller='$seller' OR seller='')