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;
 }
}