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Dedecms在PHP5.4 运行不正常怎么办

PHP5.4是公开发行的PHP程式最新版本。其执行速度和内存占用等相比PHP5.3而言有10%~30%的性能提升,所以笔者也一直想在实际环境中试运行PHP5.4(PHP5.4目前最新的版本为5.4.9)。
棘手的是与PHP5.2升级到PHP5.3有所不同的是,从5.3到5.4之间似乎变化不少,这也造成了笔者在将DEDECMS系统迁移到PHP5.4.x平台的时候出现了前台500错误后台直接空白的情况,当时也没有深究便换回PHP5.3了。

最近仔细查了下相关资料,发现主要是因为目前DEDECMS代码中使用了PHP5.4中弃用的一些函数,主要如下:

 代码如下 复制代码

allow_call_time_pass_reference、define_syslog_variables、highlight.bg、register_globals、register_long_arrays、magic_quotes、safe_mode、zend.ze1_compatibility_mode、session.bug_compat42、session.bug_compat_warn、session_register以及 y2k_compliance

其中造成DEDECMS5.7无法正常运行的函数便是session_register。
网上实测有效的方法有两种。

第一种方法申明将此函数废弃,在include/userlogin.class.php中加入如下代码:

 代码如下 复制代码

function session_register() 

 return true; 
}

第二种方法是该该页中的函数代码替换,被替换代码大致在287到308行之间:

 代码如下 复制代码

@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, '/');

替换为:

 代码如下 复制代码

global $admincachefile,$adminstyle; 
if(empty($adminstyle)) $adminstyle = 'dedecms'; 
$_SESSION[$this->keepUserIDTag] = $this->keepUserIDTag; 
$_SESSION[$this->keepUserIDTag] = $this->userID; 
$_SESSION[$this->keepUserTypeTag] = $this->keepUserTypeTag; 
$_SESSION[$this->keepUserTypeTag] = $this->userType; 
$_SESSION[$this->keepUserChannelTag] = $this->keepUserChannelTag; 
$_SESSION[$this->keepUserChannelTag] = $this->userChannel; 
$_SESSION[$this->keepUserNameTag] = $this->keepUserNameTag; 
$_SESSION[$this->keepUserNameTag] = $this->userName; 
$_SESSION[$this->keepUserPurviewTag] = $this->keepUserPurviewTag; 
$_SESSION[$this->keepUserPurviewTag] = $this->userPurview; 
$_SESSION[$this->keepAdminStyleTag] = $this->keepAdminStyleTag; 
$_SESSION[$this->keepAdminStyleTag] = $adminstyle; 
PutCookie(‘DedeUserID’, $this->userID, 3600 * 24, '/'); 
PutCookie(‘DedeLoginTime’, time(), 3600 * 24, '/');