这篇文章主要介绍了DedeCMS不支持PHP5.3、5.4及以上版本后台500错误白屏的解决方法,需要的朋友可以参考下

今天把系统换成了windows server 2008 r2 同时将PHP环境提升至PHP5.5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：

代码如下:

@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(), 3600 * 24, ‘/’);

替换成

代码如下:

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’, $this->userID, 3600 * 24, ‘/’); 

PutCookie(‘DedeLoginTime’, time(), 3600 * 24, ‘/’);