Discuz论坛2.5 升级到PHP MySQL新版遇到的问题

1 中文问题，在使用MySQL实例配置工具的使用，将使用的字符集设置为GBK，而不要设置为UTF-8

2 MySQL安装后密码无法访问问题：

mysql> SET PASSWORD FOR
    -> @#some_user@#@@#some_host@# = OLD_PASSWORD(@#newpwd@#);

3 PHP有Warning

在php.ini里面找到
bug_combat_warning = 1 两行，1 改成 0

4 MySQL 对SQL插入实行更强的格式检查．所以如果某个列是整数，就不能使用＇＇来插入．因此修改Discuz的一个函数如下

function updatesession() {
 if(empty($GLOBALS[@#sessionupdated@#])) {
  global $db, $sessionexists, $sessionupdated, $sid, $onlineip, $discuz_uid, $discuz_user, $timestamp, $groupid, $styleid, $invisible, $discuz_action, $fid, $tid, $onlinehold, $logincredits, $table_sessions, $table_members, $user_lastactivity, $onlinehold;

  if($sessionexists == 1) {
   $db->query("UPDATE $table_sessions SET uid=@#$discuz_uid@#, username=@#$discuz_user@#, groupid=@#$groupid@#, styleid=@#$styleid@#, invisible=@#" . ($invisible==""?0:1) . "@#, action=@#$discuz_action@#, lastactivity=@#$timestamp@#, fid=@#" . ($fid==""?0:1) . "@#, tid=@#" . ($tid==""?0:1) . "@# WHERE sid=@#$sid@#");
   if ($onlinehold && $user_lastactivity && $timestamp - $user_lastactivity > $onlinehold) {
    $db->query("UPDATE $table_members SET lastvisit=lastactivity, lastactivity=$timestamp WHERE uid=@#$discuz_uid@#", @#UNBUFFERED@#);
   }
  } else {
   $ips = explode(@#.@#, $onlineip);

   $db->query("DELETE FROM $table_sessions WHERE sid=@#$sid@# OR lastactivity<($timestamp-$onlinehold) OR (@#$discuz_uid@#<>@#0@# AND uid=@#$discuz_uid@#) OR (uid=@#0@# AND ip1=@#$ips[0]@# AND ip2=@#$ips[1]@# AND ip3=@#$ips[2]@# AND ip4=@#$ips[3]@# AND lastactivity>$timestamp-60)");
   $db->query("INSERT INTO $table_sessions (sid, ip1, ip2, ip3, ip4, uid, username, groupid, styleid, invisible, action, lastactivity, fid, tid)
    VALUES (@#$sid@#, @#$ips[0]@#, @#$ips[1]@#, @#$ips[2]@#, @#$ips[3]@#, @#$discuz_uid@#, @#$discuz_user@#, @#$groupid@#, @#$styleid@#, @#" . ($invisible==""?0:1) . "@#, @#$discuz_action@#, @#$timestamp@#, @#" . ($fid==""?0:1) . "@#, @#" . ($tid==""?0:1) . "@#)");
   if($discuz_uid) {
    $db->query("UPDATE $table_members SET credit=credit+".intval($logincredits).", lastip=@#$onlineip@#, lastvisit=lastactivity, lastactivity=$timestamp WHERE uid=@#$discuz_uid@#", @#UNBUFFERED@#);
   }
  }
  $sessionupdated = 1;
 }
}

原文转自：http://www.ltesting.net