dedecms忘记管理员密码，修改dede管理员密码的代码，测试可用

<?php
$rootdir = str_replace('\\','/',dirname(__FILE__));
require_once($rootdir.'/include/common.inc.php');
$adminpwd = isset($_REQUEST['adminpwd'] )? trim($_REQUEST['adminpwd']) : '';
if( empty($adminpwd) )
{
exit('密码不能为空！');
}
else if( strlen($adminpwd) < 6 )
{
exit('密码长度不能小于6位！');
}

function ResetPassWord($adminpwd)
{

//echo 'ok';exit;
$pwd =substr(md5($adminpwd),5,20);
global $dsql;
$query = "Update `#@__admin` Set pwd='$pwd' WHERE id='1'";
//print_r($dsql);exit;
return $dsql->ExecuteNoneQuery($query);
}
if( ResetPassWord($adminpwd) > 0)
{
echo $_SERVER['HTTP_HOST']." 修改密码成功，密码是 $adminpwd \r\n";
}
else
{
echo $_SERVER['HTTP_HOST']."修改密码失败! \r\n";
}
?>

新建一个 reset.php的空文件，把上面代码放到跟目录上去，然后执行http://dedecms.009870.com/reset.php?adminpwd=admin

把http://dedecms.009870.com换成你的域名，admin改成你想要的密码就可以了