表情符号显示为?在MySQL数据库中 [英] emoji display as ? in MySQL database

问题描述

表情符号存储为?在我的数据库中(当我使用phpMyAdmin可视化它们时)，但是当我使用一个简单的请求(从php)检索它们时，我得到了真正的价值.

Emoji are stored as ? in my database (when i'm visualizing them using phpMyAdmin), however when i retrieve them using a simple request (from php) i get the real value.

数据库行(使用phpMyAdmin)

来自php的请求

$query = "SELECT id,com
          FROM coms_table
          WHERE id = 627";

结果

id     com  
627    \ud83d\ude0e

---

使用此命令

---

Using this command

mysql> SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%';

我明白了:

i get this :

my.cnf文件:

[client]
default-character-set=utf8mb4

[mysql]
default-character-set=utf8mb4

[mysqld]
default-storage-engine=MyISAM
innodb_file_per_table=1
performance-schema=0
innodb_buffer_pool_size=134217728
max_allowed_packet=268435456
open_files_limit=10000
local-infile=0
character-set-client-handshake = TRUE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

总而言之，仅当我使用phpMyAdmin连接到数据库时，才会出现此问题.最糟糕的是，当我尝试使用phpMyAdmin导入数据库时​​，所有问号都替换为真实的?"，并且数据最终丢失.

To summary, the issue only occurs when i'm connecting to database using phpMyAdmin. Worst, when i try to import database using phpMyAdmin, all question marks are replaced by true "?", and datas are definitively lost.

编辑1
phpMyAdmin>变量 会话值(utf8)与期望值(utf8mb4)

EDIT 1
phpMyAdmin>Variables Session values(utf8) are different to expected values(utf8mb4)

推荐答案

似乎是phpMyAdmin错误(在4.6.4版中已更正).
当您使用phpMyAdmin连接到数据库时，不会使用默认值初始化会话的变量，例如character_set_client和character_set_results. 参见此提交.

It's appear that's a phpMyAdmin bug (corrected at version 4.6.4).
When you use phpMyAdmin to connect to your database, the session's variables like character_set_client and character_set_results aren't initialized with the default values. See this commit.

如果您有此错误并想要导入/导出数据库，请不要使用phpMyAdmin. 解决方法是，使用此链接执行导入操作，并使用

If you have this bug and want import/export your database, don't use phpMyAdmin. As a workaround, perform the import action using this link, and the export action using the documentation at this link.

这篇关于表情符号显示为?在MySQL数据库中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！