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mttypes.php
elseif ($dopost == 'save')
{
    if(isset($mtypeidarr) && is_array($mtypeidarr))
    {
        $delids = '0';
        $mtypeidarr = array_filter($mtypeidarr, 'is_numeric');
        foreach($mtypeidarr as $delid)
        {
            $delids .= ','.$delid;
            unset($mtypename[$delid]);
        }
        $query = "DELETE FROM `#@__mtypes` WHERE mtypeid IN ($delids) AND mid='$cfg_ml->M_ID';";
        $dsql->ExecNoneQuery($query);
    }
    foreach ($mtypename as $id => $name)//key完全没有过滤！
    {
        $name = HtmlReplace($name);
        $query = "UPDATE `#@__mtypes` SET mtypename='$name' WHERE//直接把ID带入查询！！
 mtypeid='$id' AND mid='$cfg_ml->M_ID'";
		echo  $query."<br>";
        $dsql->ExecuteNoneQuery($query);
    }
    ShowMsg('分类修改完成','mtypes.php');
}