dedecms V5.7 后台登录空白 解决方法

http://bbs.dedecms.com/simple/?t470641.html

我自己解决了。。。。

php文件位置：include/userlogin.class.php

查userlogin.class.php里面的keepuser()函数，
把@session_register 全部改写， 虽然不知道这个@是什么意思

把@session_register($this->keepUserIDTag);    注释掉，然后改为
if (!isset($_SESSION[$this->keepUserIDTag]))

全部有6个。
如下：
if (!isset($_SESSION[$this->keepUserIDTag]))
//@session_register($this->keepUserIDTag);    
$_SESSION[$this->keepUserIDTag] = $this->userID;

if (!isset($_SESSION[$this->keepUserTypeTag]))
//@session_register($this->keepUserTypeTag);
$_SESSION[$this->keepUserTypeTag] = $this->userType;

if (!isset($_SESSION[$this->keepUserChannelTag]))
//@session_register($this->keepUserChannelTag);
$_SESSION[$this->keepUserChannelTag] = $this->userChannel;

if (!isset($_SESSION[$this->keepUserNameTag]))
//@session_register($this->keepUserNameTag);
$_SESSION[$this->keepUserNameTag] = $this->userName;

if (!isset($_SESSION[$this->keepUserPurviewTag]))
//@session_register($this->keepUserPurviewTag);
$_SESSION[$this->keepUserPurviewTag] = $this->userPurview;

if (!isset($_SESSION[$this->keepAdminStyleTag]))
//@session_register($this->keepAdminStyleTag);
$_SESSION[$this->keepAdminStyleTag] = $adminstyle;


然后就可以登入后台了。