安装dedecms后台登录空白的解决方法

[Sabattus]

安装一切都很顺利，直到登录后台的时候，填写完用户名和密码页面就显示一个空白页面，解决办法：

找到include/userlogin.class.php，里面有一个keepuser()函数，它是用session_register来注册一个session变量，但是在php5.4中已经移除了这个功能，也就出现后台登录空白。

如果使用的该php版本肯定会出错的，不过我们可以修改下代码：

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

一共有六个，全部改为下面这样：

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;