


After the mysql link is established, set the encoding as follows:
mysql_query("SET character_set_connection=" . $GLOBALS['charset'] . ",character_set_results=" . $GLOBALS['charset'] . ",character_set_client=binary", $this->link);
However, it is created The table structure description is garbled:
mysql> show create table nw_admin_configG
* *************************** 1. row ********************* ******
Table: nw_admin_config
Create Table: CREATE TABLE `nw_admin_config` (
`name` varchar(30) NOT NULL DEFAULT '' COMMENT '��������' ,
`namespace` varchar(15) NOT NULL DEFAULT 'global' COMMENT '���������ռ�',
`value` text COMMENT '����ֵ',
`vtype` enum('string','array','object') NOT NULL DEFAULT 'string' COMMENT '����ֵ����',
`description` text COMMENT '���ý ���',
PRIMARY KEY (`namespace`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=gbk COMMENT='��վ���ñ�'
After investigation, it was found that character_set_client=binary was to blame:
mysql> show create table nw_admin_configG
**************************** 1. row ******** *******************
Table: nw_admin_config
Create Table: CREATE TABLE `nw_admin_config` (
`name` varchar(30) NOT NULL DEFAULT '' COMMENT 'Configuration name',
`namespace` varchar(15) NOT NULL DEFAULT 'global' COMMENT 'Configuration namespace',
`value` text COMMENT 'Cache value',
`vtype` enum('string','array','object') NOT NULL DEFAULT 'string' COMMENT 'Configuration value type',
`description` text COMMENT 'Configuration introduction',
PRIMARY KEY (`namespace`, `name`)
) ENGINE=MyISAM DEFAULT CHARSET=gbk COMMENT='Website Configuration Table'
However, if the character set I set is UTF8 and the table structure is also utf8, then even The above character_set_client=binary is used, and the description of the table structure is normal:
mysql> show create table nw_admin_configG
****************************** 1. row ************** *************
Table: nw_admin_config
Create Table: CREATE TABLE `nw_admin_config` (
`name` varchar(30) NOT NULL DEFAULT '' COMMENT 'Configuration name ',
`namespace` varchar(15) NOT NULL DEFAULT 'global' COMMENT 'Configuration namespace',
`value` text COMMENT 'Cache value',
`vtype` enum('string', 'array','object') NOT NULL DEFAULT 'string' COMMENT 'Configuration value type',
`description` text COMMENT 'Configuration introduction',
PRIMARY KEY (`namespace`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Website configuration table'
And the strange thing is that the garbled characters only exist in the description in the table structure, but the inserted data is still normal in Chinese ~
I checked character_set_client=binary online and they said it was "mostly set to solve the garbled problem", but I didn't know that this description of the table structure was actually garbled. What exactly does this do? Why is the table structure different?

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mysql的msi与zip版本的区别:1、zip包含的安装程序是一种主动安装,而msi包含的是被installer所用的安装文件以提交请求的方式安装;2、zip是一种数据压缩和文档存储的文件格式,msi是微软格式的安装包。

在mysql中,可以利用char()和REPLACE()函数来替换换行符;REPLACE()函数可以用新字符串替换列中的换行符,而换行符可使用“char(13)”来表示,语法为“replace(字段名,char(13),'新字符串') ”。

转换方法:1、利用cast函数,语法“select * from 表名 order by cast(字段名 as SIGNED)”;2、利用“select * from 表名 order by CONVERT(字段名,SIGNED)”语句。

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于MySQL复制技术的相关问题,包括了异步复制、半同步复制等等内容,下面一起来看一下,希望对大家有帮助。

在mysql中,可以利用REGEXP运算符判断数据是否是数字类型,语法为“String REGEXP '[^0-9.]'”;该运算符是正则表达式的缩写,若数据字符中含有数字时,返回的结果是true,反之返回的结果是false。

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了mysql高级篇的一些问题,包括了索引是什么、索引底层实现等等问题,下面一起来看一下,希望对大家有帮助。

在mysql中,是否需要commit取决于存储引擎:1、若是不支持事务的存储引擎,如myisam,则不需要使用commit;2、若是支持事务的存储引擎,如innodb,则需要知道事务是否自动提交,因此需要使用commit。


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