discuz论坛表情插件(怎么去掉discuz表情)- 畅鱼网

现在 Emoji 已逐渐普及，尤其手机用户使用 Emoji 的频率也越来越高

不过传统的 UTF 8 数据库无法储存 Emoji 表情，所以常常造成内容输入后表情以及后面文字变空白的问题，

Discuz 本身是讨论区，又只有 UTF 8 编码能使用，实在是不完美，所以就只好自己手动修改了～

Discuz 身为华语地区最大的论坛提供商，又是腾讯旗下的公司管理开发的，却一直保持摆烂状态，

虽然 X3.4 已经开源了，不过除非是比较大的漏洞也很少在优化，

新功能不太想加，https 不想支援，编辑器的坑太深所以 Bug 也索性不管了，通通只能自己来，叹气～

以上抱怨完毕，接下来开始进入正题！

1. 注意事项

这裡将以修改“全新安装”版本的方式来做范例，可以到 Discuz 官网下载最新安装包，

要将 Discuz 编码修改成 utf8mb4 其实不难，不过要花上一些时间，

最重要的是 MySQL 的版本最低需求 5.5.3 才支持 utf8mb4 编码。

2. 修改 Config

首先要修改的就是 config 目录，如果是全新安装的可以直接修改 config/config_global_default.php、config/config_ucenter_default.php 两个目录，

如果是已安装（论坛已运行中）的则是修改 config/config_global.php、config/config_ucenter.php 两个目录。

开启 config_global_default.php 修改第 38 行的 dbcharset 为 utf8mb4：

$_config['db'][1]['dbcharset'] = 'utf8mb4';

define('UC_DBCHARSET', 'utf8mb4');

已运营中的论坛需多修改一个目录！
打开 uc_server/data/config.inc.php，修改第 6 行的 UC_DBCHARSET：

define('UC_DBCHARSET', 'utf8mb4');

3. 修改数据库编码

如果是全新安装的，修改 install/index.php，找到第 375 行：

runquery($sql);

上方加上：

runquery('ALTER DATABASE '.$dbname.' CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;');

如此一来安装数据表时数据库就会一并修改为 utf8mb4 编码，如果建立数据库时已设定好编码可以忽略此步骤。

4. 修改预设代码

如果是全新安装的，还需要修改 install/include/install_var.php 第 27 行的 DBCHARSET：

define('DBCHARSET', 'utf8mb4');

5. 修改数据库长度

修改到这边就差不多了，不过这时候如果直接进行安装，在安装过程中会出现大量以下错误：

这是因为编码之间的差异导致字节计算数量超出范围的原因。

简单说就是 Discuz 本身是针对 UTF 8 编码来建立数据库，但修改为 utf8mb4 后，预设建立的 SQL 有部分栏位所定义的主键字节长度超出了可使用的范围，详情可以见此说明。

Discuz 所使用的数据库引擎是 MyISAM，MyISAM 可使用的主键长度是 1000 字节，UTF 8 每个文字占用 3 字节、utf8mb4 占用 4 字节，

而 Discuz 预设建立的 SQL 中，部分主键定义的长度是 VARCHAR(255)，在 UTF 8 下 2553=765 < 1000，但 utf8mb4 下 2554=1020 > 1000，所以会产生错误，

这时只能手动将预设 SQL 数据做修改，将主键定义长度修改为 1000/4 = 250（不过 250 似乎还是错误所以取 249），需要修改的数据有 install/data/install.sql、uc_server/install/uc.sql，

修改过程有点麻烦，我自己使用的方式如下：

1.搜寻关键字 255

2.查看定义 255 长度的栏位有没有被定义成主键

3.有的话就把该栏位长度修改成 249

X3.3 版本，install.sql 总共修改 14 处（版本不同可能也有差异）：

40 行、153 行、292 行、295 行、322 行、330 行、901 行、926 行、945 行、1269 行、2391 行、3464 行、3805 行、4008 行

uc.sql 总共修改 1 处：

123 行

6. 完成
到这边代码修改步骤就全部完成，直接安装应该就能顺利完成了，在论坛内任何地方发表时也都可以使用 Emoji 啦！

运营中的论坛？

对于如果是 Discuz 已经安装完成，但也想要直接修改的人呢，除了要修改步骤 2 之外，

可以直接到数据库管理中心（通常是 phpMyAdmin），请先对照步骤 5 要修改的 SQL 数据表栏位有哪些（请自行先备份资料库），

手动修改栏位长度，例如 install.sql 第 40 行修改的是 pre_common_admincp_perm 的 perm 栏位：

进入数据表，切换到“结构”，找到栏位后，点击 [修改]

将长度修改为 249 后按 [储存]

将总共 14+1 个地方全部修改完毕即可。

修改数据库编码

接着回到数据库，点击 [操作]，找到编码与排序后选择 utf8mb4_general_ci，点击 [执行]

如此一来数据库编码就修改完成。

修改数据表编码

这部分比较麻烦一点，不过有个偷懒的方式可以批次修改（来源），首先到数据库中切换到 [SQL]，输入指令 SHOW TABLES; 并执行：

执行后就会看到所有的数据表名称，把页面拉到最下方去，点击 [复制到剪贴]

开启 NimbleText，把东西直接贴到 For each row in this list 下方的框框内，不过上面的说明和空白部分都不要，所以把它删除

接着在下方的 Substitute using this pattern 框框内贴上：

ALTER TABLE `$0` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;

恭喜！你成功的完成了懒人步骤，赶快把下方 Results 里的内容全部复制起来

再次进入数据库的 SQL 指令页面，把复制的东西全部贴进去，按下 [执行]

大功告成～

以上方法可能不是最完美的方法，不过至少是可行的方法，如果有任何疑问或建议欢迎提出讨论～

另一种方法：

1.直接处理备份的、编码是 utf8 的bbs.sql文件，简单粗暴的办法，就是将文件中的所有出现

DEFAULT CHARSET=utf8 改为 DEFAULT CHARSET=utf8mb4

char(255) 改为 char(230) //可能会出现误改帖中相同内容

#!/bin/bash

cd /home/bbs/others/

sed -i '/DEFAULT CHARSET=utf8[^m]/s/DEFAULT CHARSET=utf8/&mb4 COLLATE=utf8mb4_general_ci/' bbs.sql

sed -i 's/` char(255) /` char(230) /g' bbs.sql

sed -i 's/` varchar(255) /` varchar(230) /g' bbs.sql

再导入bbs.sql到数据库，同时更新三个 config文件中的utf8 为 utf8mb4

2.对已经运行utf8版，直接处理。

现有的方法是：

1.在成功运行utf8的论坛的基础上，进入mysql 命令行，运行以下代码，注意一次运行十行以内代码，不然会出错。

注意，以下cdb_uc_开头的表是可能不是你库中的表，请自行修正。

use bbs;

alter table pre_common_admincp_perm modify perm varchar(230) NOT NULL;

alter table pre_common_cache modify `cachekey` varchar(230) NOT NULL DEFAULT '' ;

alter table pre_common_card modify `id` char(230) NOT NULL DEFAULT '';

alter table pre_common_member_profile_setting modify `fieldid` varchar(230) NOT NULL DEFAULT '';

alter table pre_common_member_security modify `fieldid` varchar(230) NOT NULL DEFAULT '';

alter table pre_common_setting modify `skey` varchar(230) NOT NULL DEFAULT '';

alter table pre_forum_groupfield modify `type` varchar(230) NOT NULL;

alter table pre_home_favorite modify `idtype` varchar(230) NOT NULL DEFAULT '';

alter table pre_mobile_setting modify `skey` varchar(230) NOT NULL DEFAULT '';

alter table cdb_uc_badwords modify `find` varchar(230) NOT NULL DEFAULT '';

alter table pre_common_addon modify `key` varchar(230) NOT NULL DEFAULT '';

alter table pre_common_advertisement_custom modify `name` varchar(230) NOT NULL;

alter table pre_portal_topic modify `name` varchar(230) NOT NULL DEFAULT '';

ALTER DATABASE bbs CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_admins convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_applications convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_badwords convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_domains convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_failedlogins convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_feeds convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_friends convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_mailqueue convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_memberfields convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_members convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_mergemembers convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_newpm convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_notelist convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_indexes convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_lists convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_members convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_0 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_1 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_2 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_3 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_4 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_5 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_6 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_7 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_8 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pm_messages_9 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_pms convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_protectedmembers convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_settings convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_sqlcache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_tags convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table cdb_uc_vars convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_addon convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admincp_cmenu convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admincp_group convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admincp_member convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admincp_perm convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admincp_session convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_admingroup convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_adminnote convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_advertisement convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_advertisement_custom convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_banned convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_favorite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_item convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_item_data convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_permission convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_pic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_style convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_block_xml convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_cache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_card convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_card_log convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_card_type convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_connect_guest convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_credit_log convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_credit_log_field convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_credit_rule convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_credit_rule_log convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_credit_rule_log_field convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_cron convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_devicetoken convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_district convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_diy_data convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_domain convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_failedip convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_failedlogin convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_friendlink convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_grouppm convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_invite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_magic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_magiclog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_mailcron convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_mailqueue convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_action_log convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_connect convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_count convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_count_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_crime convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_field_forum convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_field_forum_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_field_home convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_field_home_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_forum_buylog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_grouppm convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_log convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_magic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_medal convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_newprompt convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_profile convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_profile_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_profile_setting convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_security convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_secwhite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_stat_field convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_stat_fieldcache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_stat_search convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_stat_searchcache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_status convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_status_archive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_validate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_verify convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_verify_info convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_wechat convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_member_wechatmp convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_myapp convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_myinvite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_mytask convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_nav convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_onlinetime convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_optimizer convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_patch convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_plugin convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_pluginvar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_process convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_regip convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_relatedlink convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_remote_port convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_report convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_searchindex convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_seccheck convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_secquestion convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_session convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_setting convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_smiley convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_sphinxcounter convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_stat convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_statuser convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_style convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_stylevar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_syscache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_tag convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_tagitem convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_task convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_taskvar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_template convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_template_block convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_template_permission convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_uin_black convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_usergroup convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_usergroup_field convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_visit convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_word convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_common_word_type convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_disktask convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_feedlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_memberbindlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_postfeedlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_tlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_connect_tthreadlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_access convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_activity convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_activityapply convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_announcement convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_0 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_1 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_2 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_3 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_4 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_5 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_6 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_7 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_8 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_9 convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_exif convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachment_unused convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_attachtype convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_baidu_user convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_bbcode convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collection convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectioncomment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectionfollow convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectioninvite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectionrelated convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectionteamworker convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_collectionthread convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_creditslog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_debate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_debatepost convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_faq convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_filter_post convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_forum convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_forum_threadtable convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_forumfield convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_forumrecommend convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_groupcreditslog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_groupfield convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_groupinvite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_grouplevel convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_groupranking convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_groupuser convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_hotreply_member convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_hotreply_number convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_imagetype convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_medal convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_medallog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_memberrecommend convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_moderator convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_modwork convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_newthread convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_onlinelist convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_order convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_poll convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_polloption convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_polloption_image convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_pollvoter convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_post convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_post_location convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_post_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_post_tableid convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_postcache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_postcomment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_postlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_postposition convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_poststick convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_promotion convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_ratelog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_relatedthread convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_replycredit convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_rsscache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_sofa convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_spacecache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_statlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_thread convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_thread_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadaddviews convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadcalendar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadclass convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadclosed convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threaddisablepos convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadhidelog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadhot convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadimage convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadmod convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadpartake convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadpreview convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadprofile convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadprofile_group convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadrush convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_threadtype convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_trade convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_tradecomment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_tradelog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_typeoption convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_typeoptionvar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_typevar convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_forum_warning convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_album convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_album_category convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_appcreditlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_blacklist convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_blog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_blog_category convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_blog_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_blogfield convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_class convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_click convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_clickuser convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_comment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_comment_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_docomment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_doing convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_doing_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_favorite convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_feed convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_feed_app convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_follow convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_follow_feed convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_follow_feed_archiver convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_friend convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_friend_request convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_friendlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_notification convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_pic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_pic_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_picfield convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_poke convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_pokearchive convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_share convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_share_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_show convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_specialuser convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_userapp convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_userappfield convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_home_visitor convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobile_setting convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobile_wechat_authcode convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobile_wechat_masssend convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobile_wechat_resource convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobile_wsq_threadlist convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobileoem_member convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_mobileoem_pushthreads convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_content convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_count convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_related convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_title convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_article_trash convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_attachment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_category convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_category_permission convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_comment convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_comment_moderate convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_rsscache convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_topic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_portal_topic_pic convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_security_evilpost convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_security_eviluser convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

alter table pre_security_failedlog convert to character set utf8mb4 COLLATE utf8mb4_general_ci;

2.修改以下文件中的utf8,改为utf8mb4.
config/config_global.php
config/config_ucenter.php
uc_server/data/config.inc.php

3.成功

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