dedecms怎么写增删改查

<?php
      require_once (dirname(__FILE__) . "/include/common.inc.php");  //引用数据库连接文件
      if($dsql->IsTable('dede_test')){
          //如果存在dede_test表
          //-------------------
          //|    查询一条记录 |
          //|    GetOne()     |
          //-------------------
          //        ↓
          $row = $dsql->GetOne("SELECT * FROM dede_test WHERE id = 3");
          print_r($row);
         $sql = "SELECT * FROM dede_test";
            $dsql->Execute('me',$sql);
            while($arr = $dsql->GetArray('me'))
            {
                echo "id = {$arr['id']} ,name = {$arr['name']}<br />";
            }
      }
?>

<?php
            $id = 1 ;
            if($id>0){
                $sql = "DELETE FROM dede_test WHERE id='$id'";
                $dsql->ExecuteNoneQuery($sql);
                ShowMsg("成功删除一条记录内容！","true.php");  //执行成功后跳转到true.php页面
                exit();  
            }else{
                 ShowMsg("参数不对！","text.php");  //跳转到text.php页面
                exit();  
            }
?>

<?php
       $sql="INSERT INTO dede_test(name,one,two) VALUES ( '$name','$one','$two')";
            $dsql->ExecuteNoneQuery($sql);
            $lastInsertID = $dsql->GetLastID();
            ShowMsg("成功增加一条记录内容！","test.php");
?>

<?php
            $sql="UPDATE dede_test SET name='$name',one='$one',two='$two'  WHERE ID = '$id'";
            $dsql->ExecuteNoneQuery($sql);
            $lastInsertID = $dsql->GetLastID();
            ShowMsg("成功修改一条记录内容！","true.php");  //操作成功跳转到true.php
            exit();

?>