public function del()
 {
     $id = $_POST['id'];
     $coms = new \Think\Model('Comment');
     $result = $coms->delete($id);
     if ($result) {
         echo '1';
     } else {
         echo '2';
     }
 }
 public function del()
 {
     if ($_POST['id'] != '1') {
         $id = $_POST['id'];
         $user = new \Think\Model('User');
         $pic = $user->where('id=' . $id)->select();
         $pic = $pic[0]['pic'];
         unlink('./public/admin/uploads/' . $pic);
         $result = $user->delete($id);
         if ($result) {
             echo '1';
         } else {
             echo '2';
         }
     } else {
         echo '0';
     }
 }