织梦cms安装完成后登录后台出现空白。主要原因是php版本的问题

问题原因：

session_register，php5.4移除了这个函数，版本里说明，继续使用该函数会产生错误。

if (!isset($_SESSION[$this->keepUserTypeTag]))改成这个方式就可以了

解决方法：

找include/userlogin.class.php里面的keepuser()函数，

把@session_register 全部改写，@是错误抑制符

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。