DedeCMS后台，页面无显示 ，后台页面空白【转】

想试试织梦的产品，下载了DedeCMS V5.7版本，在本地部署后，正确登录后台的情况下页面没有任何输出和显示（错误登录或密码错误时才有显示），也没有报错。进到脚本调试，发现问题出在登录页login.php中以下部分。

login.php

[php]
view plaincopy

...
$cuserLogin = new userLogin($admindir);
if(!empty($userid) && !empty($pwd))
{
$res = $cuserLogin->checkUser($userid,$pwd);
//success
if($res==1)
{
$cuserLogin->keepUser();//此处以下无输出
if(!empty($gotopage))
{
ShowMsg('成功登录，正在转向管理管理主页！',$gotopage);
exit();
}
else
{
ShowMsg('成功登录，正在转向管理管理主页！',"index.php");
exit();
}
echo "ok";
}
...



到封装userLogin类所在的脚本userlogin.class.php中查看（路径./include/），所用的keepUser()方法代码如下：

userlogin.class.php

[php]
view plaincopy

...
function keepUser()
{
if($this->userID != '' && $this->userType != '')
{
global $admincachefile,$adminstyle;
if(empty($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;
}
}

把@去掉,session_register()报出错误：

Call to undefined function session_register()

证实了问题来源于此。查手册的描述如下：

"版本：(PHP 4, PHP 5 < 5.4.0)"

"本函数已自 PHP 5.3.0 起废弃并将自 PHP 5.4.0 起移除。"

查看手册

session_register()在PHP5.4后来的版本中已经多余,可以省去而直接用$_SESSION['abc'] ="" ;

查看Stack Overflow关于此方法的问题。

解决方法：去掉或注释掉所有的session_register()，改用直接存$_SESSION数组。

keepUser()部分

[php]
view plaincopy

...
//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;
...

修改后就正常显示了。

我是从织梦主页上下载的"最新"版本，很奇怪难道没有人遇到同样的问题吗。这种问题既然这里能出现，别的部分就无法保证不会有更多这样的隐患存在了。