"/project6/z/class/Dtable/ex_s.php"
我们通过POST方式传递过来的ID有：
Notice: Undefined index: ma in C:\xampp\htdocs\BeiDou_website\z\class\Dtable\ex_s.php on line 21
Notice: Undefined index: ma in C:\xampp\htdocs\BeiDou_website\z\class\Dtable\ex_s.php on line 25