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今天把系统换成了windows server 2008 r2 同时将PHP环境提升至PHP5.7版本，测试PHPinfo的时候一点问题都没有，但是登陆dede后台却显示500错误，这应该怎么解决呢？百度了一下发现dede不支持PHP5.3、PHP5.4及以上版本了，主要原为是php5.4的版本废除了session_register函数?
可以采用如$_SESSION[$this->keepUserIDTag] = $this->userID;
这种方式处理完整代码如下
首先打开 include/userlogin.class.php这个文件，在287行到308行原内容如下：
@session_register($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(),‘/’);
替换成
if(empty($adminstyle)) $adminstyle = ‘dedecms’;?
//@session_register($this->keepUserIDTag);?
$_SESSION[$this->keepUserIDTag] = $this->keepUserIDTag;?
$_SESSION[$this->keepUserIDTag] = $this->userID;?
//@session_register($this->keepUserTypeTag);?
$_SESSION[$this->keepUserTypeTag] = $this->keepUserTypeTag;?
$_SESSION[$this->keepUserTypeTag] = $this->userType;?
// @session_register($this->keepUserChannelTag);?
$_SESSION[$this->keepUserChannelTag] = $this->keepUserChannelTag;?
$_SESSION[$this->keepUserChannelTag] = $this->userChannel;?
//@session_register($this->keepUserNameTag);?
$_SESSION[$this->keepUserNameTag] = $this->keepUserNameTag;?
$_SESSION[$this->keepUserNameTag] = $this->userName;?
//@session_register($this->keepUserPurviewTag);?
$_SESSION[$this->keepUserPurviewTag] = $this->keepUserPurviewTag;?
$_SESSION[$this->keepUserPurviewTag] = $this->userPurview;?
// @session_register($this->keepAdminStyleTag);?
$_SESSION[$this->keepAdminStyleTag] = $this->keepAdminStyleTag;?
$_SESSION[$this->keepAdminStyleTag] = $adminstyle;?
PutCookie(‘DedeUserID’,‘/’);
上一篇：修改dede_tag标签的长度
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（编辑：李大同）
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