//保存配置的改动
if($dopost=="save")
{
    if(!isset($token)){
        echo 'No token found!';
        exit;
    }

    if(strcasecmp($token, $_SESSION['token']) != 0){
        echo 'Token mismatch!';
        exit;
    }
    foreach($_POST as $k=>$v)
    {
        if(preg_match("#^edit___#", $k))
        {
            $v = cn_substrR(${$k}, 1024);
        }
        else
        {
            continue;
        }
        $k = preg_replace("#^edit___#", "", $k);
        $dsql->ExecuteNoneQuery("UPDATE `#@__sysconfig` SET `value`='$v' WHERE varname='$k' ");
    }
    ReWriteConfig();
    ShowMsg("成功更改站点配置！", "sys_info.php");
    exit();
}

//更新配置函数
function ReWriteConfig()
{
    global $dsql,$configfile;
    if(!is_writeable($configfile))
    {
        echo "配置文件'{$configfile}'不支持写入，无法修改系统配置参数！";
        exit();
    }
    $fp = fopen($configfile,'w');
    flock($fp,3);
    fwrite($fp,"<"."?php\r\n");
    $dsql->SetQuery("SELECT `varname`,`type`,`value`,`groupid` FROM `#@__sysconfig` ORDER BY aid ASC ");
    $dsql->Execute();
    while($row = $dsql->GetArray())
    {
        if($row['type']=='number')
        {
            if($row['value']=='') $row['value'] = 0;
            fwrite($fp,"\${$row['varname']} = ".$row['value'].";\r\n");
        }
        else
        {
            fwrite($fp,"\${$row['varname']} = '".str_replace("'",'',$row['value'])."';\r\n");
        }
    }
    fwrite($fp,"?".">");
    fclose($fp);
}