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:
复制代码
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
复制代码
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, ‘/’);
查看更多关于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的详细内容...