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

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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：

@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

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, ‘/’);