http://www.dzhope.com/index.php zh-cn http://www.dzhope.com/post// jed <jed521@163.com> Thu, 17 Apr 2008 02:26:22 +0000 http://www.dzhope.com/post//
插入中文数据之前(Mysql命令提示符下)是用set names gb2312;

在php页面中设置是mysql_query('SET NAMES UTF8');

在php页面(已设定为utf8后)中插入中文数据不会出现乱码,应该插入数据库的时候就是以utf8字符集插入中文数据的故不会出现问题!

在php页面前面不要忘了加上header('content-type;text/html;charset=utf-8');

大家在MySQL命令提示符下想查看数据,中文数据有可能是如下 '?????'

所以大家想查看到正确的中文要与插入中文数据一样使用set names gb2312;


例子:

CREATE DATABASE mydb;

USE mydb5;

CREATE TABLE news
(
      news_id int not null auto_increment,
      news_title varchar(100) not null,
      news_contents text not null,
      news_date datetime not null,
      primary key(news_id)
)default charset=utf8;

set names gb2312;    /*关键!插入中文数据要加上*/

INSERT INTO news VALUES(null, '新闻1', '111111', now());
INSERT INTO news VALUES(null, '新闻2', '222222', now());
INSERT INTO news VALUES(null, '新闻3', '333333', now());
INSERT INTO news VALUES(null, '新闻4', '444444', now());
INSERT INTO news VALUES(null, '新闻5', '555555', now());

Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\YSDH.YSDH-0>cd \

C:\>mysql -h localhost -uroot -p
Enter password: ******
Welcome to the MySQL monitor.                          Commands end with ; or \g.
Your MySQL connection id is 6 to server version: 5.0.22-community-nt-log

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use mydb;
Database changed
mysql> INSERT INTO vote VALUES(null,'你是从哪里了解到本站的?',1,default);
Query OK, 1 row affected (0.00 sec)

mysql> set names utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> INSERT INTO vote VALUES(null,'你是从哪里了解到本站的?',1,default);
ERROR 1406 (22001): Data too long for column 'vote_title' at row 1 (varchar(100) 还不够?)
mysql> describe vote;
+------------+--------------+------+-----+---------+----------------+
| Field                              | Type                                 | Null | Key | Default | Extra                                  |
+------------+--------------+------+-----+---------+----------------+
| vote_id                            | int(11)                              | NO                           | PRI | NULL                            | auto_increment |
| vote_title | varchar(100) | NO                           |                             | NULL                            |                                        |
| vc_id                              | int(11)                              | NO                           |                             | NULL                            |                                        |
| votes_sum                          | int(11)                              | NO                           |                             | 0                               |                                        |
+------------+--------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)

mysql>

代码一:


Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\YSDH.YSDH-0>cd \

C:\>mysql -h localhost -uroot -p
Enter password: ******
Welcome to the MySQL monitor.                       Commands end with ; or \g.
Your MySQL connection id is 458 to server version: 5.0.22-community-nt-log

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use mydb;
Database changed
mysql> show tables;
Empty set (0.00 sec)

mysql> set names utf8; //设置数据库字符集为utf8
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE TABLE vote
                         -> (
                         ->                       vote_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
                         ->                       vote_title varchar(100) not null,
                         ->                       vc_id int not null,
                         ->                       votes_sum int not null default 0
                         -> )ENGINE=MyISAM DEFAULT CHARSET=utf8//创建数据表,字符集设定为utf8
                         -> ;
Query OK, 0 rows affected (0.03 sec)

mysql> INSERT INTO vote VALUES(null,'你是从哪里了解到本站的?',1,default);
ERROR 1406 (22001): Data too long for column 'vote_title' at row 1//TNND,一样的字符插入中文也有错?疑问中.....
mysql> INSERT INTO vote VALUES(null,'bu shi ba da ge',1,default);//插入英文无错....
Query OK, 1 row affected (0.00 sec)

mysql>

代码二:

mysql> drop table vote;
Query OK, 0 rows affected (0.00 sec)

mysql> set names gb2312;//设置数据库字符集为gb2312
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE TABLE vote
                         -> (
                         ->                       vote_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
                         ->                       vote_title varchar(100) not null,
                         ->                       vc_id int not null,
                         ->                       votes_sum int not null default 0
                         -> )ENGINE=MyISAM DEFAULT CHARSET=gb2312
                         -> ;
Query OK, 0 rows affected (0.03 sec)

mysql> INSERT INTO vote VALUES(null,'你是从哪里了解到本站的?',1,default);
Query OK, 1 row affected (0.00 sec)//gb2312不亏是专门为中文制定的标准啊..我喜欢不过不国际化

mysql> select * from vote;
+---------+-------------------------+-------+-----------+
| vote_id | vote_title                                   | vc_id | votes_sum |
+---------+-------------------------+-------+-----------+
|                            1 | 你是从哪里了解到本站的? |                          1 |                              0 |
+---------+-------------------------+-------+-----------+
1 row in set (0.00 sec)

mysql> set names utf8;//设定字符集编码为utf8
Query OK, 0 rows affected (0.00 sec)

mysql> select * from vote;//效果出来了^_^!
+---------+------------------------------------+-------+-----------+
| vote_id | vote_title                                              | vc_id | votes_sum |
+---------+------------------------------------+-------+-----------+
|                            1 | 浣犳槸浠庡摢閲屼簡瑙ｅ埌鏈 珯鐨? |                          1 |                              0 |
+---------+------------------------------------+-------+-----------+
1 row in set (0.00 sec)

解决方案:

以前在internet上看到一篇文章说的是mysql编码问题!
utf与gb2312等,问macleo那老小子这两种编程有什么不同,是不是utf8更加的国际化,
回答是:'聪明';
后来我就去internet 上找了一篇文章,我也转载到我的baidu空间中了,相信经常来的朋友一定看过就篇文章!
http://hi.baidu.com/zhaofei299/blog/item/e290ff99b9b889096f068c0b.html
最近在我看了php编程标准:http://www.phpe.net/html/php_coding_standard_cn.html(好东西)
后我决定要修改以后的不好的地方,追求标准国际化,于是从最近开始我就使用utf8来编写我的程序，以前我是用默认的gb2312的，看了utf8后有点不爽,经过几天下来，一个字爽,代码让人一看就有点像高手(虽然我很菜^_^)
前几天没用到数据库也没在意,以前看过那篇set names XXX，认为在连接数据库的时候加个
mysql_query('SET NAMES xxx')不就行了,就昨天我按我设想开始了对数据库的操作，谁知道可怕的事情发生了,显示乱码就真让人不爽，想到PHPer 第4期中有对编码的介绍http://hi.baidu.com/zhaofei299/blog/item/daa734f0bef131ada50f52cd.html
于是header('conten-type:text/html;charset=utf-8');当时我嘴上一笑应该搞定了吧，运行后没想到还是乱码，我当时行不爽，在网上搜了半天,想到哦，有可能是建表的时候没有使用utf编码插入，显示的时候用utf8就出问题了，使用drop table XXX后，set names utf8
然后建表，
使用mysql> INSERT INTO vote VALUES(null,'你是从哪里了解到本站的?',1,default);
插入数据时出错:ERROR 1406 (22001): Data too long for column 'vote_title' at row 1
不是吧，varchar(100)还长??
使用mysql> INSERT INTO vote VALUES(null,'11111111111sdgsdg1111?',1,default);
成功了，我当时打击不小!
方案也就是说set names xxx一定要在插入中文数据后使用,否则报错.(建表后要加default charset utf8)
对了,在php中对数据库进行操作的时候一定用上set names utf8哦，要不然会出错的
最好在每个php页面之前加上header('conten-type:text/html;charset=utf-8')

使用utf8字符集注意事项:

建立新数据库时CREATE TABLE xxx DEFAULT CHARSET=UTF8;//这样所有的该数据库下所有的表的字符集都为utf8,或在建立新数据库时设定字符集

CREATE TABLE xxx
(
id int not null auto_increment primary key,
name varchar(100),
............
)default charset=utf8                      //设定单个表的字符集为utf8






set name utf8在命令提示符中与php页面不同!

在mysql的命令提示符下使用

set names utf8插入中文会报错:

ERROR 1406 (22001): Data too long for column 'vote_title' at row 1

在php中对mysql进行操作,

使用mysql_query('SET NAMES UTF8')插入中文成功!

<?php
header('content-type:text/html;charset=utf-8');
$link=mysql_connect('localhost','root',123456);
mysql_select_db('mydb');
mysql_query('set names utf8');
$sql="SELECT * FROM ";
$sql1="INSERT INTO baidu VALUES('大哥帮帮忙!')";
$result1=mysql_query($sql1,$link) or die('Error:'.mysql_error());
$result=mysql_query($sql,$link);
while ($re_arr=mysql_fetch_assoc($result))
print_r($re_arr);
?>



总结:

总之在建立数据库或数据表后面要加上default charset=utf8

插入中文数据时最好不要在命令提示符中插入,有人会问输入命令set names utf8不就行了

哥们你试下,set names utf8后,插入中文数据会报错的!

不用set names utf8, 插入时使用的是msyql的默认字符集(gb2312) ，在php页面中

mysql_query('SET NAMES UTF8')会出现乱码的!

mysql在安装的时候不知道你设定默认字符集的是哪种!

至于mysql命今提示符中                  set names utf8(表加了default charset=utf8);后报错问题我还是想不透!!!一样的字符集为什么插入就会出错呢，还请高手指点!

Tags - utf8 , utf-8 , utf－8 , mysq , 编码 , 字符集 ]]> http://www.dzhope.com/post//#blogcomment <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 http://www.dzhope.com/post//#blogcomment