原文来自：https://www.zixuephp.com

DEDECMS在PHP5.4不能正常运行怎么办

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：

  1. 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：

  1. functionsession_register()
  2. {
  3. returntrue;
  4. }

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:

  1. @session_register($this->keepUserIDTag);
  2. $_SESSION[$this->keepUserIDTag]=$this->userID;
  3. @session_register($this->keepUserTypeTag);
  4. $_SESSION[$this->keepUserTypeTag]=$this->userType;
  5. @session_register($this->keepUserChannelTag);
  6. $_SESSION[$this->keepUserChannelTag]=$this->userChannel;
  7. @session_register($this->keepUserNameTag);
  8. $_SESSION[$this->keepUserNameTag]=$this->userName;
  9. @session_register($this->keepUserPurviewTag);
  10. $_SESSION[$this->keepUserPurviewTag]=$this->userPurview;
  11. @session_register($this->keepAdminStyleTag);
  12. $_SESSION[$this->keepAdminStyleTag]=$adminstyle;
  13. PutCookie(‘DedeUserID’,$this->userID,3600*24,'/');
  14. PutCookie(‘DedeLoginTime’,time(),3600*24,'/');

替换为如下代码:

  1. global$admincachefile,$adminstyle;
  2. if(emptyempty($adminstyle))$adminstyle='dedecms';
  3. $_SESSION[$this->keepUserIDTag]=$this->keepUserIDTag;
  4. $_SESSION[$this->keepUserIDTag]=$this->userID;
  5. $_SESSION[$this->keepUserTypeTag]=$this->keepUserTypeTag;
  6. $_SESSION[$this->keepUserTypeTag]=$this->userType;
  7. $_SESSION[$this->keepUserChannelTag]=$this->keepUserChannelTag;
  8. $_SESSION[$this->keepUserChannelTag]=$this->userChannel;
  9. $_SESSION[$this->keepUserNameTag]=$this->keepUserNameTag;
  10. $_SESSION[$this->keepUserNameTag]=$this->userName;
  11. $_SESSION[$this->keepUserPurviewTag]=$this->keepUserPurviewTag;
  12. $_SESSION[$this->keepUserPurviewTag]=$this->userPurview;
  13. $_SESSION[$this->keepAdminStyleTag]=$this->keepAdminStyleTag;
  14. $_SESSION[$this->keepAdminStyleTag]=$adminstyle;
  15. PutCookie(‘DedeUserID’,$this->userID,3600*24,'/');
  16. PutCookie(‘DedeLoginTime’,time(),3600*24,'/');