$members = M("members");
$data["id"]=intval(session('MemberID')); //有数字,这一行,带不带输出都是下面那个
$data["mailok"]=$mailok; //也有值
$row = $members->where("ID=".session('MemberID'))->save($data);
echo $members->getLastSql();输出
UPDATE `pp_members` SET WHERE ID=60