织梦dedecms后台/dede/login.php登录空白解决办法 php5.4

在dedecms目录include/userlogin.class.php中查找

function keepUser()

大概在281行,把keepUser()函数下的 @session_register(); 整段注释掉（删除也可以），结果如下：

function keepUser()   
{   
    if($this->userID != '' && $this->userType != '')   
    {   
        global $admincachefile,$adminstyle;   
        if(emptyempty($adminstyle)) $adminstyle = 'dedecms';   
  
        //@session_register($this->keepUserIDTag);   
        $_SESSION[$this->keepUserIDTag] = $this->userID;   
  
        //@session_register($this->keepUserTypeTag);   
        $_SESSION[$this->keepUserTypeTag] = $this->userType;   
  
        //@session_register($this->keepUserChannelTag);   
        $_SESSION[$this->keepUserChannelTag] = $this->userChannel;   
  
        //@session_register($this->keepUserNameTag);   
        $_SESSION[$this->keepUserNameTag] = $this->userName;   
  
       // @session_register($this->keepUserPurviewTag);   
        $_SESSION[$this->keepUserPurviewTag] = $this->userPurview;   
  
        //@session_register($this->keepAdminStyleTag);   
        $_SESSION[$this->keepAdminStyleTag] = $adminstyle;   
  
        PutCookie('DedeUserID', $this->userID, 3600 * 24, '/');   
        PutCookie('DedeLoginTime', time(), 3600 * 24, '/');   
           
        $this->ReWriteAdminChannel();   
           
        return 1;   
    }   
    else  
    {   
        return -1;   
    }   
}  

第二种方法：
include/userlogin.class.php 中声明一个函数

function session_register() 
{
return true;
}